PLEASE HELP!!

Which physical adaptations increase an organism's chances of physically defending itself?
(Select all that apply.)
O the venom of a snake
the horns of cattle
O the wax-producing glands of bees
O the bright plumage of birds

im not too sure but it should probably be B or D. if not sorry.

Metal atoms have low ionization energy, and nonmetal atoms have high electronegativity.

According to the periodic table the elements which are most active are Li and Na.

Ionic bonding occurs when valence electrons transfer completely between atoms. The metal atoms having low ionization energy, loses electrons and becomes positively charged.

The noble gasses (Group 18) are considered inactive since they already have a stable octet of electrons in their outer shell.

An ionic bond is produced between metallic and non-metallic atoms, where electrons are completely transferred from one atom to another. During this process, one atom loses electrons and another one gains them, forming ions.

Therefore, Metal atoms have low ionization energy, and nonmetal atoms have high electronegativity.

According to the periodic table the elements which are most active are Li and Na.

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The substances Pyruvate and Oxaloacetat, would be glycogenic in mammals, if produced from the catabolism of an amino acid. Correct answer: numbers 2 and 4.

Pyruvate and oxaloacetate are the end products of the breakdown of certain amino acids (glucogenic amino acids) in the liver. These products can be converted into glucose, through a process known as gluconeogenesis. This process allows the body to maintain blood glucose levels even when dietary sources of glucose are not available.

Catabolism of an amino acid refers to the process of breaking down amino acid molecules into simpler molecules, such as:

This process releases energy that the body can use for other metabolic functions.

Which of the following substances, if produced from the catabolism of an amino acid, would be glucogenic (in mammals)?

1. Acetoacetate

2. Pyruvate

3. Acetyl-CoA

4. Oxaloacetate

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A 15.5 gram sample of diphosphorous pentoxide contains 8.74 grams of oxygen (option D)..

A chemical compound is a substance formed by the union of two or more chemical elements in a fixed ratio, the union being a chemical bond.

According to this question, a chemical compound named diphosphorous pentoxide (P₂O₅) is made up of two elements namely: phosphorus and oxygen.

The atomic mass of oxygen in the compound is as follows: 16 × 5 = 80g/mol

Atomic mass of P₂O₅ = 142g/mol

Mass of oxygen = 80/142 × 15.5 = 8.74 grams

Therefore, 8.74 grams is the mass of oxygen in the compound.

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At STP, the volume of one mole of any gas is 22.4 L. As per the given reaction, one mole or 22.4 L of Cl₂ gas gives one mole or 22.4 L of I₂ gas. Thus, 21 L of  Cl₂ gives 21 L of I₂ gas.

The volume occupied by one mole of a substance is called its molar volume. At standard temperature and pressure condition (STP), one mole of every substance contains 22.4 L .

One mole of Cl₂ gas at STP contains 22.4 L similarly one mole of I₂ contains 22.4 L. As per the reaction, one mole of Cl₂ give one mole of l₂. Thus, both are having equal volumes in this reaction.

Therefore, 21 L Cl₂ reacts to give 21 L l₂ at STP .

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Answer: 21 L i2 at STP

Explanation:

One mole of Cl₂ gas at STP contains 22.4 L similarly one mole of I₂ contains 22.4 L. As per the reaction, one mole of Cl₂ give one mole of l₂. Thus, both are having equal volumes in this reaction.

Therefore, 21 L Cl₂ reacts to give 21 L l₂ at STP .

Answer:

It is not possible to determine the type of chemical reaction that will occur when Ca LiOH → without additional information. The chemical formula Ca LiOH could represent a compound, but without knowing what reactants are present and what products are being formed, it is not possible to classify the reaction. Some possible reactions that could occur involving Ca LiOH include a synthesis reaction, where Ca LiOH is formed from its constituent elements, a decomposition reaction, where Ca LiOH breaks down into its constituent elements, or a substitution reaction, where one or more atoms in Ca LiOH are replaced by other atoms.

Explanation:

The molecular formula of C₆H₇N is  C₁₂H₁₄N₂; C₂HCl is C₆H₃Cl₃; C₅H₁₀NS₂ is C₁₀H₂₀N₂S₄

The molecular formula can be calculated from the empirical formula and molar mass as follows:

first we know that  the number of moles = subscript

So,

C has 6 moles

H has 7 moles

N has 1 mole

then we can Multiply moles by atomic mass to find molecular weight

therefore,

C = 6 × 12 =72

H =7 × 1 = 7

N = 1 × 14 = 14

to get the empirical weight we calculate by adding molecular weight

C+H+N = 72+7+14= 93

we know that molecular formula is (empirical formula )n

so we should find n by Divide molar mass by the empirical weight

186.24 ÷ 93 = 2

so molecular formula of C₆H₇N is (C₆H₇N)2 = C₁₂H₁₄N₂

first we know that  the number of moles = subscript

So,

C has 2 moles

H has 1 moles

Cl has 1 mole

then we can Multiply moles by molar mass to find molecular weight

therefore,

C = 2 × 12 = 24

H = 1 × 1 = 1

Cl = 1 × 35.5 = 35.5

to get the empirical weight we calculate by adding molecular weight

C+H+Cl = 24+1+35.5 = 60.5

we know that molecular formula is (empirical formula )n

so we should find n by Divide molar mass by the empirical weight

181.44 ÷ 60.5 = 3

so molecular formula of C₂HCl is (C₂HCl)3 = C₆H₃Cl₃  

first we know that  the number of moles = subscript

So,

C has 5 moles

H has 10 moles

N has 1 mole

S has 2 moles

then we can Multiply moles by atomic mass to find molecular weight

therefore,

C = 5 × 12 = 60

H = 10 × 1 = 10

N = 1 × 14 = 14

S = 2 × 32 =64

to get the empirical weight we calculate by adding molecular weight

C+H+N +S = 60+10+14 +64 = 148

we know that molecular formula is (empirical formula )n

so we should find n by Divide molar mass by the empirical weight

296.54 ÷ 148 = 2

so molecular formula of C₅H₁₀NS₂ is (C₅H₁₀NS₂)2 = C₁₀H₂₀N₂S₄

Your question is incomplete but most probably your full question was

From the given empirical formula and molar mass, find the molecular formula of each compound. C₆H₇N, 186.24 g/mol C₂HCl, 181.44 g/mol C₅H₁₀NS₂,296.54 g/mol

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In the given Galvanic cell, the electrons are flowing from left to right. The Zinc is oxidized into Zn²⁺ ions.

A galvanic cell can be described as an electrochemical cell in which electricity is produced from spontaneous Oxidation-Reduction reactions. Galvanic cells exhibit spontaneous redox reactions but the energy generated from the said reaction.

A common apparatus of the galvanic cell consists of two different metals or electrodes such as Zinc and copper electrodes, each immersed in different beakers containing their respective ion solution. Therefore, the Zinc electrode is placed in ZnSO₄ solution and the copper electrode is placed in CuSO₄ solution.

On the left end, the zinc metal is oxidized into Zn²⁺ ions, and the electrons from the Zinc electrode travel to the copper electrode (right end). The cooper Cu²⁺ ions from the CuSO₄ solution accepts those electrons and deposit as copper metal on the copper electrode.

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b. testing the hypothesis

According to the reaction, the one mole or 28 g of CO produces one mole or 32 g of methanol. Thus, 16.7 g will produce 19 g of methanol.

Methanol is an organic compound formed by the covalent bonding between carbon and oxygen. Methanol is the basic alcohol.

As per the balanced reaction CO be the limiting reactant. One mole of CO produces one mole of methanol.

molar mass of CO = 28 g/mol

molar mass of methanol = 32 g/mol

28 g of CO produces 32 g of methanol. Hence, mass of methanol produced by 16.7 g of CO is:

= (16.7g × 32 g) / 28 g.

= 19 g.

Therefore, the mass of methanol produced from 16.7 g will be 19 g.

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The Boiling point is 345.36 K at 1.332 atm.

What is boiling point?

Organic compounds' boiling points will reveal important information about their structural and physical characteristics. The boiling point of a substance aids in its identification and characterization. A liquid's boiling point is higher under higher atmospheric pressure than it is under lower atmospheric pressure.

What is vaporization  ?

The process of converting a substance from its liquid or solid state into its gaseous (vapour) state is known as vaporization. Boiling is the process of vaporizing a liquid when the environment permits the development of vapor bubbles inside the liquid.

Relationship is between vapor pressure and boiling point and ΔHvap is given by clauses clampy ton.

ln ( p₂/p₁)-  ΔHvap/ R ( 1/ l₂- 1/ T₁)

Now given,

normal boiling point means pressure is 1 atm

P₁= 1atm, T₁= 328k

p₂= 1,32 atm, T₂= ?

ΔHvap= 36.6KJ/ Mol = 36600J/Mol

ln= (1.32/1) = - 36600J/mol/ 8.314 J/Mol.K  (1/T₂- 1/338K)

= 1/T₂- 1/338K = - 6.30664*10⁻⁵ K⁻¹

= 1/T₂ = 2.8955*10⁻³ K⁻¹

T₂= 345.36 K

Therefore, Boiling point is 345.36 K at 1.332 atm.

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A computer simulation technique called molecular dynamics (MD) examines the actual motions of atoms and molecules. For a predetermined amount of time, the atoms and molecules are allowed to interact, providing insight into the system's dynamic "evolution."

What purposes might molecular dynamics serve?

For big molecules like proteins, molecular dynamics is frequently the approach of choice. It can be used to explore conformational space. In molecular dynamics, the energy surface is investigated by resolving the system's Newton's laws of motion.

How do simulations of molecular dynamics function?

A method for simulating complicated processes on computers that models them at the atomic level is called molecular dynamics. The system's time evolution is tracked by numerically solving the motion equations, which enables the use of "computer experiments" to derive important kinetic and thermodynamic parameters.

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Higher the value of the principle quantum number to which electron is jumping, longer will be the wavelength. So, n = 6, p = 8 transition produces longest wavelength.

What is Wavelength?

A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles.The wavelength is most frequently described in nanometers (nm), which are units of 10-9 m, or angstroms (), which are units of 10-10 m, for infrared (IR), visible light (UV), and gamma radiation ().

Frequency, which is defined as the quantity of wave cycles per second, and wavelength have an inverse relationship.

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Answer:

The formula mass of iron(II) chloride is 162.21 g/mol.

Answer:

Chemical symbols are abbreviations that are used in chemistry to shorten names of chemical elements and chemical compounds.

Answer:

Apple trees bloom in the spring because they require a certain amount of cold weather, known as chill hours, in order to break dormancy and produce flowers. In most regions where apple trees grow, the temperatures during the springtime provide the ideal conditions for the trees to bloom. During the summer, apple trees are focused on growing and ripening their fruit, rather than producing flowers. In some cases, apple trees may produce a small number of flowers during the summer, but this is not the norm. The exact amount of chill hours that apple trees need can vary depending on the specific variety of apple tree, as well as the region where it is grown.

Explanation:

Answer:

Drought may trigger out-of-season blooming

Many trees and shrubs that flower in early spring, like apples and lilacs, form their buds during the preceding summer. When spring breaks the plant's dormancy, the buds burst open and bloom.

Answer: 3.0655207907157433

Explanation:

No, 48 ounces are not enough. For making a small robot we need 64 ounces which is equal to 4 pounds.

Pound is a unit for measuring weight. 16 ounces makes one pound.

Ounce is also a unit for measuring weight. 16 ounces is equal to 1 pound

So, for making one small robot we need 4 pounds.

1 pound = 16 ounces

4 pounds = 64 ounces

But, we have 48 ounces

We need more = 64 - 48 = 16 ounces or 1 pound

No, 48 ounces are not enough. For making a small robot we need 64 ounces which is equal to 4 pounds.

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The molecular geometry of the molecule shown in the image is trigonal planar with three domains.

Molecular geometry can be defined as a three -dimensional arrangement of atoms which constitute the molecule.It includes parameters like bond length,bond angle and torsional angles.

It influences many properties of molecules like reactivity,polarity color,magnetism .The molecular geometry can be determined by various spectroscopic methods and diffraction methods , some of which are infrared,microwave and Raman spectroscopy.

They provide information about geometry by taking into considerations the vibrational and rotational absorbance of a substance.Neutron and electron diffraction techniques provide information about the distance between nuclei and electron density.

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Butyryl chloride reacts with Grignard reagent, methyl magnesium bromide, to form pentan-2-one. Pentan-2-one reacts with vinyl magnesium bromide to form the final product 3-methylhex-1-en-3-ol.

The following diagram illustrates how butyryl chloride becomes 3-methylhex-1-en-3-ol. conversion of 3-methylhex-1-en-3-ol from butyryl chloride. Tertiary alcohols are produced when carboxylic esters, R'CO2R, combine with two equivalents of an organolithium or Grignard reagent. Two identical alkyl groups are present in the tertiary alcohol (see R) A ketone intermediate is used to carry out the reaction, which is subsequently used to react with the second equivalent of the organometallic reagent. As we've just seen, the ketone undergoes further reactions to create a tertiary alcohol. This explains why, when reacting with esters, two equivalents of Grignard are required. a mechanism The Grignard performs an addition reaction on the ester in the first step, resulting in the formation of C-C and the breakdown of C-O (pi), giving us an intermediate with a negatively charged oxygen.

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Answer:

The answer to your question is ⇔ arctic air mass

Explanation:

I hope this helps and have a wonderful day!

Answer: you didn't add much information, but I think it's: in order for a sedimentary rock to be created, the rock must first become sediment.

Explanation: sediment is basically small pieces of rock that have been eroded from their parent rock; and with immense heat and pressure, those pieces will form a sedimentary rock.

3040mmHg pressure is nearly equal to 4 atm.

Atmospheric pressure (atm) is a unit of measurement equal to the mean atmospheric pressure at sea level at a temperature of 15 degrees Celsius (59 degrees Fahrenheit). Atmospheric pressure is most often approximated by the hydrostatic pressure caused by the weight of the air above the point of measurement. Air pressure decreases with altitude because as altitude increases, the air above has less mass. Since the atmosphere is thin relative to the Earth's radius (especially in the dense atmospheric layers at low altitudes), the Earth's gravitational acceleration as a function of altitude can be approximated as constant and contributes little to this decline. Pressure is measured as force per unit area in SI units Pascal (1 Pascal = 1 Newton per square meter, 1 N/m²). Atmospheric pressure at sea level is 760 cm Hg.

Given,

3040mmHg pressure

1 mmHg = 0.00131579 atm

3040mmHg = 3040 × 0.00131579 atm

3040mmHg = 4.0000016 atm

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Chemical equation is a representation of a reaction that brings in chemical changeschanges. It is represented in word form and in symbols.

What is a chemical equation?

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Answer:

White dwarf.

Explanation:

its the most furthest.

According to the given statement the rate law for this reaction. A+2B→AB2 is =k[A][B]

A chemical reaction is a process that permits one group of chemical components to change chemically into another.Chemical reactions, which can frequently be defined by a chemical equation, traditionally include changes that only affect the locations of electron in the formation and dissolution of chemical bonds among atoms, with no changes to the nucleus (no change to the components contained).

Combination or synthesis, decomposition, single displacement, double displacement, and combustion are the five different types of generic chemical reactions.

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The Krebs cycle produces molecules necessary for function of the electron transport chain.

What is electron transport chain ?

The oxidative phosphorylation process, also known as oxidative phosphorylation, is a comprehensive system that produces ATP by coupling redox processes through a sequence of four protein complexes known as the electron transport chain. Cellular respiration and photosynthesis both involve it in mitochondria.

What is  Krebs cycle?

The Krebs cycle, also known as the TCA cycle or the citric acid cycle, is a sequence of enzyme-catalyzed processes taking place in the mitochondrial matrix where acetyl-CoA is oxidized to produce carbon dioxide and coenzymes are reduced to produce ATP in the electron transport chain.

Therefore, the Krebs cycle produces molecules necessary for function of the electron transport chain.

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The balanced chemical equation in acidic solution is as follows: Cr₂O₇²−(aq) +  3 HNO₂(aq) ⎯→2  Cr₃+(aq) + 3 NO₃−(aq) + 4 H₂O(l).

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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The atomic radius of the gold based on this structure in picometers ia given as:  21.7506

The atomic radius is: The average or normal distance from the nucleus's center to the edge of the surrounding electron shells is what we mean when we talk about an element's atomic radius.

We have the effective number of gold atoms to be 4 in a given unit cell

Then the molar mass of gold is given as 197 g / mol

The relationship between the edge length and the atomic radius is defined mathematically as:

√2a = 4r

make r the subject of the formula

r = √2a / 4

From the question the value of a is given as unit cell edge length of 61.52 pm

We would put this in the formula such that we would have:

r = √2 * 61.52 /4

r = 87.0024 /4

r = 21.7506

The atomic radius is  21.7506

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Answer:

69.23g

Explanation:

Find out how many moles is in 9.89g of H2.

number of moles = mass(g) / molar mass

1 is the molar mass of hydrogen (to the nearest whole)

relative molecular mass of H2: 2*1 = 2

number of moles of H2 = 9.89/2 = 4.945

1 mol of H2 is produced from 2 mol of Li

so

4.945 mol of H2 produces 9.89 mol of Li

mass(g) = number of moles * molar mass

7 is the molar mass of Lithium (to the nearest whole)

mass = 9.89 * 7 = 69.23

69.23 grams of Li are needed to produce 9.89 of H2