a mixture of 0.220 moles co, 0.350 moles h2 and 0.640 moles he has a total pressure of 2.95 atm. what is the pressure of co? a) 1.86 atm b) 0.649 atm c) 0.536 atm d) 1.54 atm e) 0.955 atm

Answers

Answer 1

The pressure of co is 0.536 atm. So, the correct option is (C)

Mole fraction of a gas = the Number of moles of gas / Total moles of gas

For CO :

Mole fraction of CO = 0.220/( 0.220 + 0.350 + 0.640)

  = 0.1818

the pressure of a gas = Mole fraction×Total pressure

For CO :

pressure of CO = 0.1818 ×2.95 atm ≈  0.536 atm

Hence, the pressure of co is  0.536 atm.

The ratio of the partial pressure of a given gas to the overall pressure exerted by the gaseous mixture is the mole fraction of that gas in a mixture of gases. When the entire number of moles in the mixture is known, this mole fraction can also be used to determine the total number of moles of a constituent gas.

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Related Questions

PLEASE HELP: Explain why most substances are carbon compounds?

Answers

Answer:

The reason is carbon's ability to form stable bonds with many elements, including itself. 

Explanation:

This property allows carbon to form a huge variety of very large and complex molecules. In fact, there are nearly 10 million carbon-based compounds in living things!

Answer:

Explanation:

The reason is that carbon is able to form stable bonds with many elements, including itself, which allows carbon to form a huge variety of very large and complex molecules.

Arrange the boiling points of the aqueous solutions, relative to pure water. Assume complete dissociation for the ionic compounds.

Answers

The boiling points are arranged from highest to lowest as follows:

0.18m CaI₂

0.12 m KI

H₂O

0.30 m  NH₃

0.37m C₂H₅OH

what is the boiling point?

Boiling point is the temperature at which the pressure in the system equals atmospheric pressure. This temperature varies from liquid to liquid and can be used to identify what a particular liquid is.

It should be noted here that the boiling point elevation of a substance is a collective property. This means that the amount of material present is important. Therefore, to know how the boiling points of different substances change, we need to consider the number of particles that are in the system.

Aqueous solutions are homogeneous mixtures of matter and water.

Ionic compounds are neutral compounds. Ionic compounds are formed from cations and anions.

your question is incomplete but most probably your full question was

Arrange the boiling points of the aqueous solutions, relative to pure water. Assume complete dissociation for the ionic compounds.

0.12 m KI0.37 m C₂H₅OH0.30 m NH₃0.18 CaI₂H₂O

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Which of the following is a sign that a chemical change has occurred?
Group of answer choices

glass changes shape when it falls and breaks

water produces a gas when it is placed on a hot stovetop

a firework explodes releasing heat, sound, and light energy

a substance becomes cold when it is placed in the freezer

Answers

The change that represents a chemical change is; a firework explodes releasing heat, sound, and light energy

What is a chemical change?

We define a chemical change as one in which there is the alteration of the reactants and the products. The chemical bonds in the reactants and the products are broken up in a chemical change.

This is why we can say that when there is a chemical change, there would be the formation of a new substance and then there could be some markers of a chemical change that could take place in the system and these may include but are not limited to;

Appearance of a new color

Change in the temperature

Evolution of a gas

Thus the explosion of the firework is a typical example of the ocurence of a chemical change .

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if 10.0 g of aluminum reacts with excess sulfuric acid, and 54.2 g of al2(so4)3 are collected, what is the percent yield of al2(so4)3? a) 63.4% b) 85.5% c) 117% d) 47.1% e) not enough information given

Answers

The percent yield of al2(so4)3 is option B. 85.58%.

In chemistry, yield, additionally called reaction yield, is a measure of the quantity of moles of a product fashioned in relation to the reactant fed on, acquired in a chemical reaction, generally expressed as a percent.

Percent yield is the percent ratio of real yield to the theoretical yield. it is calculated to be the experimental yield divided through theoretical yield expanded by one hundred%. If the real and theoretical yield ​are the equal, the percentage yield is one hundred%.

Calculation:-

2Al+3H2SO4 → Al2(SO4)3+3H22

27*2 g of Al produces = 342 g Al2(SO4)3

10 g Al Produces =  342 /54 × 10

                             =  63.33

percentage yield =  54.2/63.33 × 100

                             = 85.58%

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what is the relationship among electrons, the octet rule, and the oxidation number of a monatomic ion

Answers

The electrons that are shared, lost, or gained are called valence electrons. The charge an ion will have after gaining or losing electrons is indicated by the oxidation number.

According to the octet rule, elements interact with one another to form a noble gas electron configuration by either gaining electrons or losing them. The number of electrons in an element's outermost shell is known as its valency, whereas the number of electrons an element has gained or lost in a compound is known as its oxidation state. The primary distinction between valency and oxidation state is this. Each shell can hold a maximum of half the number of elements in the corresponding period in terms of electrons.

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9. A gas sample occupies 3.25 liters at 24.5 °C and 1825 mm Hg. Determine
the temperature at which the gas will occupy 4250 mL at 1.50 atm.

Answers

Answer: 243K

Explanation:

which amino acid contains sulfur atoms that form covalent disulfide bonds and stabilize the tertiary structure of some proteins?

Answers

Cysteine, amino acid contains sulfur atoms that form covalent disulfide bonds and stabilize the tertiary structure in some proteins.

What are Amino acids?

Organic substances known as amino acids are primarily made up of nitrogen, carbon, hydrogen, and oxygen. Twenty distinct amino acids are required by your body for growth and optimal operation. All 20 of them are crucial for your health, but only 9 are considered to be absolutely necessary.

What are proteins?

Organic molecules called proteins are found in all living things. They perform a wide range of tasks, such as transportation, organizing, and defence. Proteins have up to four different layers of structure and are made up of chains of amino acids.

What are Disulfide bonds?

An S- anion from one sulfhydryl group acts as a nucleophile, attacking the side chain of a second cysteine to create a disulfide bond, and in the process releases electrons (reducing equivalents) for transfer. Disulfide bond formation involves a reaction between the sulfhydryl (SH) side chains of two cysteine residues.

Hence, cysteine, amino acid contains sulfur atoms that form covalent disulfide bonds and stabilize the tertiary structure in some proteins.

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How do you calculate moles at STP?

Answers

The following formula will calculate the amount of moles at STP: Molar volume at STP (litres)/Volume at STP (litres).

At STP, moles can be converted to gas volume and gas volume to moles using molar volume. The conversion factor is based on the equality 1mol=22.4L. The molar volume of a gas at STP, which is defined as 273.15 K (0°C) and 1 atm, is 22.414 L/mol. 0°C (273.15 K) and 1 atm of pressure are considered standard temperature and pressure (STP). The volume of one mole of a gas at STP is its molar volume. A mole (6.02 1023 typical particles) of any gas at STP takes up 22.4 L of space.

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In an electrolytic cell the electrode at which the electrons enter the solution is called the ______ ; the chemical change that occurs at this electrode is called _______.

Answers

The appropriate answer is

In an electrolytic cell the electrode at which the electrons enter the solution is called the cathode; the chemical change that occurs at this electrode is called reduction.

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why does the temperature of the reaction mixture drop (as opposed to remaining constant) once the reaction reaches the stoichiometric point?

Answers

The reaction is no longer operating and no longer producing heat, which causes the temperature to drop. Additionally, the temperature of the reactant solution added after the stoichiometric point is achieved is lower than that of the reaction mixture.

What is Stoichiometric Point?

The titration's equivalence point is reached by adding just enough titrant to totally neutralize the analyte solution. The titrant's moles (a standard solution) are equivalent to the moles of the unknown-concentration solution. Because it is at this point that the quantity of acid needed to neutralise an identical amount of base is equal, it is often referred to as the stoichiometric point. Please take note that this does not imply that the acid to base ratio is 1:1. The equation for a balanced acid-base chemical reaction determines the ratio.

Actually at the equivalence point, the titrant and analytes have completely reacted, that's why temperature drop.

The equivalence point, or stoichiometric point, of a chemical reaction is the point at which chemically equivalent quantities of bases and acids have been mixed

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what is the crystal field stabilization energy of a low spin d7 complex in an octahedral crystal field?

Answers

the crystal field stabilization energy of a low spin d7 complex in an octahedral crystal field is −1.8Δo

The ligand is a strong field ligand, and the supplied complex is an octahedral complex. Since it has a low spin, the pairing energy will be lower than the energy required to split the crystal field.

CFSE for octahedral complex =[−0.4(n)t2g+0.6(n′)eg ]Δo+n∗P

Where,

n is number of e− occupying t2g orbital

n' is the number of e− occupying eg orbital

Δois ligand field splitting energy

n∗ is the number of extra electron pairs

P is spin-pairing energy

The CFSE of a d7 octahedral complex = −0.4×6+0.6×1

= −2.4+0.6

= −1.8Δo

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nmr spectroscopy, or_____magnetic resonance spectroscopy, is a very important tool in the determination of organic structures. this technique relies on the interaction of a particular nucleus with a field followed by absorption of energy of a specific____, depending on the chemical environment of the nucleus.

Answers

NMR spectroscopy, or nuclear magnetic resonance spectroscopy, is a very important tool in the determination of organic structures. This technique relies on the interaction of a particular nucleus with a magnetic field followed by absorption of energy of a specific frequency depending on chemical environment of the nucleus.

what is NMR spectroscopy?

NMR spectroscopy can be defined as an indispensable tool which applies magnetic field to an atomic nucleus (e.g., the most common stable isotopes 1H, 13C, 15N) and radio frequency pulses to characterize resonant frequency of that atomic nucleus according to its chemical or environmental surroundings

Nuclear magnetic resonance (NMR) spectroscopy is advanced characterization technique. It is used to determine molecular structure at the atomic level of a sample.

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if an ideal gas initially at 5 bar and 12.5 l is compressed at constant temperature to 2.5 l, what is the final pressure of the gas? g

Answers

The final pressure of the gas with initial pressure of 5 bar and initial volume of 12.5 L is 25 bar.

The Boyle's law can be used to explain the pressure-volume relationship of an ideal gas at constant temperature. The final pressure can be easily predicted using the relation as shown below if the beginning pressure and volume of an ideal gas are known at a constant temperature with the final volume.

P1V 1 = P2V 2

P 1 denotes the starting pressure, P2 is the ending pressure, V 1 is the starting volume, and V 2 is the ending volume.

The initial pressure P1= 5 bar

The initial volume V1= 12.5 L

The final volume V2= 2.5 L

The final pressure P2=?

P1V1=P2V2

5×12.5= P2× 2.5

P2= 62.5/2.5

P2= 25 bar

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what happens during radioactive decay? group of answer choices a stable isotope of one element changes into a new isotope of a different element a stable isotope of one element changes into a new isotope of the same element an unstable isotope of one element changes into a new isotope of a different element an unstable isotope of one element changes into a new isotope of the same element

Answers

They emit ionizing radiation (alpha, beta, and/or gamma rays) that has the property of releasing energy. Because it has the potential to dislodge firmly bound electrons from an atom's orbit, the energy is known as ionizing radiation.

In plain English, what is radioactive decay?

a radioactive process where a nucleus spontaneously splits, loses electrons, or undergoes fission while also emitting radiation.

What is lost when radioactive material decays?

Some of the mass of uranium nuclei is transformed into kinetic energy during radioactive decay (the energy of the moving particles).

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Which is not found on the periodic table of elements. the atomic number of each element, the rarity of each element, the atomic mass of each element​

Answers

Answer:

The rarity of each element.

Explanation:

The periodic table shows the atomic number and the atomic mass. The abundance (or rarity) of each element is not given.

Answer: sorry misclick

Explanation:

This type of bias occurs when researchers fail to choose a representative sample of potential respondents is called?

Answers

The type of bias occurs when researchers fail to choose a representative sample of potential respondents is called sampling bias.

Sampling bias is the phenomenon that occurs when a research take a look at layout fails to collect a representative sample of a goal populace. This happens generally due to the fact that the selection standards for respondents failed to seize a wide enough sampling frame to represent all viewpoints.

Some of the commonplace varieties of sampling bias encompass self-selection bias, nonresponse bias, survivorship bias, pre-screening or advertising bias, and healthful user bias.

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Give short answers for the following
1. Comment Dalton's atomic theory and the areas in which modifications were
made.

Answers

Dalton's atomic theory was having different postulates. Some of them are:

1. All matters are made up of tiny indivisible particles called atoms.

2. All atoms are identical in mass, size and many other properties.

3. Atoms can be neither created nor destroyed.

4. Atoms can be combined or separated from elements.

But all these theories were modified:

1. Atom can further be divided into 3 parts electron, proton and neutron.

2. Isotopes are members of same atoms family but still have different properties. Isotopes are the number which have same atomic number but different mass number. Example Carbon isotopes.

3. This Theory failed for isobars. Isobars are the elements which have different atomic number but same mass number. Example Ar and Ca

4. This theory failed for Allotropes. Allotropes are the member of same family with different properties. Example Diamond and Graphite which are of carbon family.

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What are the relative positions of the sun, Earth, and moon at the times of lunar and solar eclipses, as well as new, first-quarter, full, and last-quarter phases of the moon?

Answers

The relative positions of the sun, Earth, and moon at the times of lunar and solar eclipse is the earth comes in between the moon and the sun.

The relative positions of the sun, Earth, and moon :

1) New moon : they are lined up with the moon comes in between the earth and the sun.

2) first quarter : the first quarter phase is when the earth - moo  line is 90 ° away from the earth and sun line.

3) full moon : The moon , the earth  and the sun line up and the earth is comes in between the moon and the sun.

4) the last quarter : the the last quarter phase is when the earth moon line is 270° away from the earth sun.

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An electrolyte is a substance that dissolves in water to yield a solution that conducts electricity

Answers

An electrolyte is a substance that dissolves in water and produces ions that conducts electricity.

What is an electrolyte?

An electrolyte can be described as a medium containing ions that are electrically conducting through the movement of ions but not conducting electrons. Most soluble salts, acids, and bases can be dissolved in a polar solvent, such as water. Upon dissolving, the substance dissociates into cations and anions, which disperse throughout the solvent.

The movement of cations and anions in opposite directions within the solution and conduct electricity in a solution such as a hydrogen chloride (HCl), under conditions of high temperature or low pressure, can function as electrolytes.

Electrolyte solutions are formed when salt is placed into a solvent and the individual components separate due to the thermodynamic interactions between solvent and solute, in a process known as "solvation".

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Energy from the_______is constantly passing through the different layers of the atmosphere as waves, landing on and
being absorbed into the Earth's surface to provide the heat and warmth for
life.

A. insolation
B. weather
C. air
D. conduction
E. ozone
F. ecological
G. atmosphere
H. sun
I. convection
J. tilts

Answers

Answer H. THE SUN explanation sun is hot

Answer:

H.Sun

Explanation:

The heat source for our planet is the Sun. Energy from the sun is transferred through space and through the earth's atmosphere to the earth's surface. Since this energy warms the earth's surface and atmosphere, some of it is or becomes heat energy.

So the answer is H.Sun

How much amount of NaCl is decomposed by 4.9 g of H2SO4 if 6g of nahso4 and 1.825 g of HCL are produced in the same reaction 6 g 4.9 g 1.825 g 2.925 g?

Answers

2.925 g NaCl is decomposed by 4.9 g of H2SO4. If 6g of nahso4 and 1.825 g of HCL are produced in the same reaction

We have to find out how much amount of NaCl is decomposed in reaction,Where we have given mass of reactant and product as follow;

Mass of H2SO4 = 4.9g

Mass of NaHSo4 = 6g

Mass of HCL = 1.825g

The reaction can be given as:

NaCl + H2SO4​ → NaHSO4​ + HCl

According to law of conservation of mass:

W(NaCl) + W(H2SO4​)​ = W(NaHSO4​)​ + W(HCl)​

W(NaCl) + 4.9g = 6g + 1.825g

W(NaCl)​ = 6+1.825−4.9

W(NaCl) = 2.925 g

So, 2.95 g of NaCl is Decomposed by H2SO4 during reaction.

What is the law of conservation of mass?

It states that all chemical equations must be balanced because matter cannot be created or destroyed in chemical reactions. Mass of Reactant and Mass of product after reaction are always same.

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While attempting to determine the structure of a compound using elemental analysis and functional group tests, you are generally able to recover your original sample.
a. True
b. False

Answers

True, You can typically get your original sample back when utilizing functional group tests and elemental analysis to try to figure out a compound's structure.

Which test is applied to a compound's elemental analysis?

In an elemental analysis, the sodium test, also known as Lassaigne's test, is used to determine whether certain foreign elements, such as halogens, nitrogen, sulfur, and phosphorus, are present in an organic compound.

What analytical techniques can be used to ascertain a compound's structure?

The four primary methods are mass spectrometry, nuclear magnetic resonance (NMR) spectroscopy, infrared (IR), and ultraviolet and visible spectroscopy. A minimal amount of sample is required for spectroscopy, and after an IR, NMR, or UV spectrum has been generated, the sample can be reused.

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Write a nuclear equation to describe the neutron-induced fission of Pu-241 to form Kr-89 and Ce-149. Determine how many neutrons are produced in the reaction.

Answers

The number of neutrons produced in the reaction is 5.

Neutrons are the neutral particles present in the nucleus of any atom.

Nuclear equation:

2(1)n₀ + (241)Pu -----> (89)Kr + (149)Ce + 3n₀

In balancing nuclear equations- the sums of the superscripts and the subscripts must be the same on each side of the equation.  

On Balancing the superscripts, we get:

2 + 241 = 89 + 149 + x

243 = 238 + x

x = 5

The balanced equation is:

2(1)n₀ + (241)Pu -----> (89)Kr + (149)Ce + 5n₀

Therefore, the number of neutrons produced in the reaction is 5.

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examine the melting points as you go down a family and across a period. is there a trend? if there is a trend, what is it? a. down a family: b. across a period

Answers

Both the melting and boiling factors lower down the group as the melting points as you go down a family and across a period. is there a trend.

As nicely discovered earlier, the greater delocalised electrons gift and the smaller the radius of the atom, the better the melting factor of the metallic. As we circulate throughout duration three the quantity of delocalised electrons consistent with metallic atom will increase and the radius of the factors decreases. This way the melting factor will increase.

The melting and boiling factors of the Group 1 factors lower on descending the group. This is because of a lower withinside the forces of appeal among the atoms. On crossing a duration withinside the Periodic Table the atomic length decreases. On descending a collection the atomic length will increase.In a duration, the melting and boiling factor first will increase after which decreases.

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how many grams of pbbr2 will precipitate when excess nh4br solution is added to 79.0 ml of 0.546 m pb(no3)2 solution?

Answers

The number of moles of HI needed is 0.1234 mol, Mass of PbBr2 is  21.3g , Volume of HI solution needed is 237 ml.

What is precipitate  ?

It is common for an insoluble compound to form when a solution having a specific cation (a positively charged ion) is mixed with another solution carrying a specific anion (a negatively charged ion). The solid that divides is referred to as a precipitate.

What is excess solution ?

Reactant or reagent that is still present after a chemical reaction has finished is known as excess reagent. In other words, when a chemical reaction occurs, more of a reactant is present than is needed to complete the reaction.

1) Volume of Pb(NO3)2 solution = 76.0ml = ( 76.0ml) x ( 1L / 1000ml) = 0.0760 L

Number of moles of Pb(NO3)2 reacted = Molarity of Pb(NO3)2  solution x Volume of Pb(NO3)2 solution

                                                         = 0.764 molL-1 x 0.0760 L            ( here M can be shown as molL-1)

                                                           = 0.05806 mol

As NH4Br is mentioned to be present in excess the amount of product PbBr2 depends on Pb(NO3)2

Number of moles of PbBr2 formed = Number of Pb(NO3)2 moles reacted = 0.05806 mol

Mass of PbBr2 = moles of PbBr2 x molar mass of PbBr2

                         =  0.05806 mol x 367 g/mol

                           = 21.3g

Thus mass of PbBr2 that will precipitate = 21.3g

2)  MgCO3 moles = ( mass of MgCO3) / ( molar mass fo MgCO3)

                         = ( 5.20g / 84.3g/mol) = 0.0617 mol

Number of moles of HI needed = 2 x MgCO3 moles   ( based on balanced equation coefficients)

                                                = 2 x 0.0617 mol = 0.1234 mol

Volume of HI solution needed = ( Moles of HI solution needed) / ( Molarity of HI solution)

                                              = ( 0.1234 mol / 0.520molL-1)               ( here units M can be shown as molL-1)

                                               = 0.237L

                                              = 0.237L x ( 1000 ml / 1L)

                                             = 237 ml

Thus volume of HI solution needed = 237 ml

Therefore, Number of moles of HI needed is 0.1234 mol, Mass of PbBr2 is  21.3g , Volume of HI solution needed is 237 ml.

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ice freezing exothermic or endothermic?

Answers

Answer: exothermic reaction

Explanation:When water becomes a solid, it releases heat, warming up its surroundings. This makes freezing an exothermic reaction.

Answer: Exothermic Reaction

Explanation:

Exothermic: Releases heat and causes the temperature of the immediate surroundings to rise.

Endothermic: Absorbs heat and cools the surroundings.

When water becomes a solid, it releases heat, warming up its surroundings. This makes freezing an exothermic reaction.

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the half life of a certain radioactive sample is 1 hr. if the mass of the sample is 1 gram at noon, what will be the mass of the sample at 3pm?

Answers

The half life of a certain radioactive sample is 1 hr. if the mass of the sample is 1 gram at noon, what will be the mass of the sample at 3pm?

The half-life is the time it takes for one-half of the radioactive element to decay. The value of the half-life given here is one hour.

After one hour (1 PM) there would only be

(1/2)*(1 g)= 0.5 g of the element remaining.

After three hours (3 PM) there would only be

(1/2)*(1/2)*(1/2)*(1 g) = (1/8)g remaining.

Half-life is the time required for a quantity to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive. The term is also used more generally to characterize any type of exponential decay.

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you are in a place that is extremely hot and dense. you can't see far because your surroundings are opaque to light. around you, nuclear fusion is converting carbon into oxygen and other elements. where are you?

Answers

The expansion of the universe suggests that items were once closer together, because material becomes hotter and denser when it is compressed.

Nuclear fusion is transforming carbon into oxygen and other elements while you are at the center of a big star near the end of its life, which makes it difficult for you to see far because the area is opaque to light around you. Later, in a process known as stellar nucleosynthesis, the heavier elements were produced from hydrogen. This was a prolonged process whereby hydrogen and helium were fused together in the stars, which acted as enormous furnaces, at various points of their lives. The universe had gotten bigger.

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the compound of which two elements is most likely to involve covalent bonding? electronegativities of unknown elements q 0.9 x 3.0 r 1.0 z 4.0 t 2.8

Answers

The compound of T and X is most likely to involve covalent bonding.

The ability of an atom or functional group to draw electrons to itself is known as electronegativity in chemistry. An atom's electronegativity is influenced by both its atomic number and how far away from its charged nuclei its valence electrons are located.

The differences in the electronegativities are:

Q and Z : 4.0-0.9 = 3.1

R and X : 3.0-1.0 = 2.0

T and Z : 2.8-0.9 = 1.9

T and X : 3.0-2.8 = 0.2

Q and T : 2.8 - 0.9 = 1.9

Smallest difference in electronegativity causes a higher overlap in the orbitals of the shared electrons.

Therefore, the smallest difference between the given elements is between T and X.

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Which are easier for your body to metabolize: saturated or unsaturated fats?

Answers

The unsaturated fats are easier for the body to break because they are liquid at room temperature.

What are unsaturated fatty acids?

Unsaturated fats, which are liquid at room temperature, are regarded as healthy fats because they help reduce inflammation and raise blood cholesterol levels. Unsaturated fatty acids that have been converted to saturated fatty acids are known as trans fats.

Conversely, saturated fats lack double bonds, while unsaturated fats do. As a result, they take on a kinkier shape and don't pack as tightly. Their bonds are more easily broken when molecules are farther apart.

Therefore, since unsaturated fats are liquid at normal temperatures, the body may more easily break them down.

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15. M. Jaffey had a total of 428. 5 ounce of pretzel to put into 5 bowl for a party. She put an equal number of ounce of pretzel into each bowl. How many ounce of pretzel did M. Jaffey put into each bowl? PLEASE HELP ASAP AHhHHhHhHhthe product of "-1.8" and 3 more than a number as the same as 1 / 10 what is the numberILL GIVE YOU POINTS PLEASE se es el hombre . rubn blades, . no traje . te gusta la manta ? cmo se llama el programa ? la mujer . 100-5nshow work!!! Sometimes during a psychoanalysis session, patients will displace feelings for people in their lives onto the therapist. What is this process known as?a. manifestingb. transferencec. counterbalancingd. transmission What is the basic function of a computer mouse? the buyer of a futures contract is said to have a position, and the seller of a futures contract is said to have a position in futures. a. long; short b. long; long c. short; short d. short; long (HELP ASAP FOR BRAINLIEST!!) Use specific examples from the history you have learned to compose a well-developed paragraph on the following:Explain what the middle class was, how it developed in medieval Europe, and what made it significant. (2x-y< -7x-y-6 determine if (-10,5) is a solution to system Which fact is not used to prove that abc is similar to dbe? the sum of angles a and b are supplementary to angle c. Segments ac and de are parallel. Ab is a transversal line passing ac and de. Angle b is congruent to itself due to the reflexive property. true or false: measuring the success of an email campaign or a single email blast is straightforward if the database is set up properly to track the appropriate metrics. a 8-year- old boy has a severe sore throat, high fever, and cervical adenopathy. it is suspected that the causative agent is streptococcus pyogenes. before antibiotic therapy is initiated, the patient is given aspirin to reduce his fever. the mechanism of fever reduction by aspirin is A mutation that occurs in a somatic cell in an organism will most likely be transferred to? What is democratic Short answer? Which of the following is a complex sentence? Although the dentist did not find anything wrong, Sue's mouth still hurt. The dentist did not find anything wrong with her teeth, but Sue continues to have a toothache. Although the dentist found nothing wrong with Sue's teeth, she still had a toothache, so she went to bed. The dentist did not find anything wrong with Sue's teeth. the linear regression method seeks to predict values of a(n) question blank 1 of 2 type your answer... variable based on values of a(n) when considering perfect competition, the absence of entry barriers implies that:________ The word "crucible" means "a container for melting or purifying metals" or "a severe test" Why are they both appropriate meanings for Miller's play ? suppose that the variable alivecnt initially contains the value 0x02. what will be the content of this variable (in hex notation) after execution of the following subroutine? how did this make you feel? can you see how resistance may hint that someone is defending themselves against difficult personal understandings? how can interpreting the resistance help them solve underlying issues and anxieties?