To answer if a salt is formed between the reaction of a base and an acid, we need to remember that, if we react a strong acid and a strong base, such as HCl and NaOH, two products will be formed: the appropriate salt and water.
In the example above, we can write the reaction as:
HCl + NaOH -> NaCl + H2O
where a strong acid and a strong base react to form a salt (NaCl) and water (H2O).
Thus, we can say that, yes, a salt is formed when an acid and a base react between each other.
what family is 1s 2s 2p3s
Answer:
Explanation:
look at the periodic table to see where 8 electrons is on the table, Oxygen is 8, so this is an Oxygen atom, next what group does Oxygen belong to? It's reactive non-metals, if you didn't look at the periodic table
lead(ii) nitrate reacts with sodium sulfate in a double displacement reaction. assign oxidation numbers to elements/polyatomic ions. which element/polyatomic ion has the largest magnitude of change in oxidation number?
lead(ii) nitrate reacts with sodium sulfate in a double displacement reaction. Pb (NO₃)₂+Na₂so₄⇒Pbso₄+ 2NaNO₃ . nitrogen has highest change in oxidation number{+2 to +5}
what is oxidation state?Oxidation state indicates the degree of oxidation for an atom in a chemical compound; it is the hypothetical charge that an atom would have if all bonds to atoms of different elements were completely ionic. Oxidation states are typically represented by integers, which can be positive, negative, or zero.
Pb{+2}⇒Pb{+2} no change in oxidation state
N{+2}⇒N{+5} oxidation state increase by a factor of three
Na{+1}⇒Na{+1} oxidation state no change
S{+6}⇒S{+6} no change in oxidation
learn more about oxidation number :https://brainly.com/question/25551544
#SPJ4
0.10 mm kmno4 has an absorbance maximum of 0.26 at 525 nm in a 1.000-cm cell. find the molar absorptivity and the concentration of a solution whose absorbance is 0.52 at 525 nm in the same cell. watch your units.
Molar absorptivity and the concentration of the solution whose absorbance is 0.52 at 525nm is 2600M-1 cm-1 and 0.20mM.
Molar absorbance is the measure how strongly a chemical species absorbs at given wavelength of light. Beers law relates the absorbance of a solution to its molar concentration. Beers law states that the light that absorbs by the solution is directly proportional to the concentration of the substance absorbing the light.
Absorbance and concentration are related to each other using the path length of light and molar absorptivity of the substance. Molar absorptivity of a substance is given by,
A= E.I.C
0.26= 1.00cm .e . 0.10 . 10-3 M
e= 0.26 / 0.10 *10-3 M.cm
= 2600M-1cm-1
In the same way we have to calculate the concentration of the another sample using path length and molar absorptivity which are same for both the samples .
Calculating the relation, we got the concentration of 0.2mM.
To know more about Beers law please visit:
https://brainly.com/question/18205869
#SPJ4
addition of which metal ion or combination of ions restores alkaline phosphatase activity closest to that of native enzyme?
Mg, Zn metal ion or combination of ions restores alkaline phosphatase activity closest to that of native enzyme.
The physiological function of alkaline phosphatase is to dephosphorylate substances. The enzyme is present across a wide range of prokaryotes and eukaryotes, serving the same general purpose but taking on different structural forms depending on the environment in which they are active.
The periplasm of E. coli bacteria contains alkaline phosphatase. The highest activity of this enzyme occurs at high pH levels and it is heat stable. Depending on where it originated in the body, it might appear in a variety of ways in people.
To know more about alkaline phosphatase, click here,
brainly.com/question/29438902
#SPJ4
You were helping your science teacher put away lab materials. They asked you to carry sand, iron filings, and salt in cups to put away. However, a fellow student left their backpack in the middle of the floor. You fell over it and dropped all of the materials. After sweeping up the mess, all of the sand, iron filings and salt are mixed together. Your job now is to use the physical properties of these substances to separate the mixture and return the pure substances to their separate containers.
What physical property or properties might help you remove salt from the mixture? (2 points)
What process will you use to separate the salt from the mixture? (2 points)
What physical property of properties might help you remove iron from the mixture? (2 points)
What process will you use to separate the iron from the mixture? (2 points)
What physical property or properties might help you remove sand from the mixture? (2 points)
What process will you use to remove sand from the mixture? (2 points)
Now, list the steps that you will take to separate the three components of the mixture. Be specific enough that someone else could complete the mixture separation exactly as you have planned to do it. You may use bullet points and labeled diagrams to answer this question. (8 points, see rubric)
Physical property might help you remove salt from the mixture solubility. Process use to separate the salt from the mixture is filtration and Distillation. Physical property of properties might help to remove iron from the mixture is Magnetism. process will you use to separate the iron from the mixture is using magnet. Physical property or properties might help you remove sand from the mixture is solubility. process use to remove sand from the mixture Filtration.
First we separate iron fillings from the mixture by using magnet. Then we dissolve the sand and salt mixture in water. salt is soluble in water and sand is insoluble in water. sand is now can be separated by the filtration process. last we have salt mixed in water . on heating the solution water get evaporated and salt crystal are left behind.
Thus, Physical property might help you remove salt from the mixture solubility. Process use to separate the salt from the mixture is filtration and Distillation. Physical property of properties might help to remove iron from the mixture is Magnetism. process will you use to separate the iron from the mixture is using magnet. Physical property or properties might help you remove sand from the mixture is solubility. process use to remove sand from the mixture Filtration.
To learn more about separation here
https://brainly.com/question/28644075
#SPJ1
a particular substance is typically found in nature as a pure element. what can you conclude about the reactivity of this element? (hint: which family contains elements that are generally found as pure elements?)
The element is likely a member of the noble gas family, which contains elements that are generally unreactive. A particular substance is typically found in nature as a pure element.
From this, we can conclude that the element is not reactive. The noble gas family is a group of elements in the periodic table that include helium, neon, argon, krypton, xenon and radon.
They are all non-reactive and have very low reactivity. The noble gases are all found in the air and are used in a variety of ways. Helium is used in balloons and airships, while argon is used in fluorescent lights. Krypton and xenon are used in flash photography, and radon is used in cancer treatment.
Learn more about reactivity at :
https://brainly.com/question/1598581
#SPJ4
A few of the alpha particles were deflected. What does this evidence suggest about the structure of the gold atoms?
Answer:
Most alpha particles passed straight through the gold foil, which implied that atoms are mostly composed of open space. Some alpha particles were deflected slightly, suggesting interactions with other positively charged particles within the atom.
Explanation:
Rutherford model, also called Rutherford atomic model, nuclear atom, or planetary model of the atom, description of the structure of atoms proposed (1911) by the New Zealand-born physicist Ernest Rutherford. The model described the atom as a tiny, dense, positively charged core called a nucleus, in which nearly all the mass is concentrated, around which the light, negative constituents, called electrons, circulate at some distance, much like planets revolving around the Sun.
As the pressure of a system increases, what happens to the volume?
To answer this, we use Boyle's Law:
States that, at constant temperature, the pressure P of a gas varies inversely with its volume V.
So, if the pressure increases, the volume will decrease.
Answer: The volume decreases.
What is the molar mass of water (H2O) in grams per mole?
To find the molar mass, what we do is to follow the steps:
1. Make use of the chemical formula to determine the number of atoms of each element in the compound.
2. Multiply the molar mass of each element with its number of atoms present in the compound.
3. Add up all and assign unit as grams/mole.
In this problem, the molecule of water contains 2 atoms of Hydrogen and 1 atom of Oxygen.
The molar mass of Hydrogen is about 1g/mol and the molar mass of Oxygen is about 16g/mol, so:
Therefore, the answer is 18 g/mol.
2) A diver weighing 9 Newtons is on a diving board that is 16 meters high. What is the
diver's potential energy?
Answer: Unknown
Explanation:
In order to solve the question you would require the approximate amount of gravity upon the diver, meaning his acceleration due to gravity.
what is the relationship between the raw materials and the products in photosynthesis
Answer:
Plants perform photosynthesis in the presence of sunlight, water and carbon dioxide to produce food and oxygen. Sunlight, water and carbon dioxide are the raw materials; food and oxygen are the products of photosynthesis
Answer:
Photosynthesis is the conversion of light energy into chemical energy by living organisms.
Explanation:
The raw materials are carbon dioxide and water; the energy source is sunlight; and the end-products are oxygen and (energy rich) carbohydrates, for example sucrose and starch. This process is arguably the most important biochemical pathway, since nearly all life depends on it. It is a complex process occurring in higher plants, phytoplankton, algae, as well as bacteria sucl as cyanobacteria. Photosynthetic organisms are also referred to as photoautotrophs.
What is the missing (?) in the chemical equation for cellular respiration? glucose + oxygen --> water + ? + atp.
The complete balanced chemical equation for cellular respiration is as follow:
Glucose(C₆H₁₂0₆) + 6O₂ --> 6H₂O+ 6CO₂ + ATP.
The process through which cells break down molecules for getting energy is known as cellular respiration. The cells use the oxygen present in air to accomplish this process and produces CO₂ exhale in the atmosphere. Basically, during process of cellular respiration, Carbon dioxide is created when the oxygen present in body and the glucose present in food are combined together converted in to carbon dioxide, water and strongly powered reaction releases energy in the form of ATP molecules. Ion transport, muscular contraction, nerve impulse transmission, substrate phosphorylation, and chemical synthesis are just a few of the processes that use ATP as an energy source.
To learn more about cellular respiration click here
brainly.com/question/13721588]
#SPJ4
Question 3 of 5Why do you need to use soap when you wash oil from your hands?OA. The soap is polar and can therefore interact with both the waterand the oil.OB. The soap has a polar end that can interact with the water and anonpolar end that can interact with the oil.OC. The soap has a nonpolar end that can interact with the water anda polar end that can interact with the oil.ОD. The soap is nonpolar and can therefore interact with both thewater and the oil.
Answer
B. The soap has a polar end that can interact with the water and a nonpolar end that can interact with the oil.
Explanation
In the case of soap, the carbon chain dissolves in oil and the ionic end dissolves in water. Thus, the soap molecules form structures called micelles. In micelles, one end is towards the oil droplet, and the other end which is the ionic faces outside.
Hence, the correct answer is:
B. The soap has a polar end that can interact with the water and a nonpolar end that can interact with the oil.
ASSESSMENT QUESTIONS
4. PART A: In paragraph 4, the author describes
the path to the village as having "a 19th-
century feel." How does this description
contribute to the the central idea of the text?
OA. It emphasizes that un-electrified regions
have been left behind by international
advances in technology.
OB. It highlights how living without electricity
is the norm and the rural population
accepts this way of life.
OC. It portrays the people in the rural villages
as inferior because of their subpar living
conditions.
OD. It characterizes the lifestyle of those living
without electricity as being of a simpler time
It emphasizes that un-electrified regions have been left behind by international advances in technology. Option A.
A central idea is the central unifying element of a story that ties together all other elements of fiction that the author uses to tell the story. The central idea is best described as the dominant impression or universal, prevalent truth found in the narrative: renewable energy sources such as wind, water, solar and geothermal.
The refrigerator or freezer may be out of power. The phone line goes down and the phone signal is lost. When the battery gets low, the phone becomes useless as there is no backup charging option. The gas central heating doesn't work and the tap stops pumping clean water quickly. Sustainable energy comes from resources that can sustain continuous operation without jeopardizing the energy needs or climate of future generations.
Learn more about The central idea here:-https://brainly.com/question/24572492
#SPJ9
Lead ions can be removed from solution by precipitation with sulfate ions. Suppose a solution contains lead(II) nitrate.
1) List the compounds involved in the reaction.
Lead (II) nitrate
Potassium sulfate
Lead (II) sulfate
Potassium nitrate.
2) Write the formula of every compound.
Lead (II) nitrate: Pg(NO3)2
Potassium sulfate: K2SO4
Lead (II) sulfate: PbSO4
Potassium nitrate: KNO3
3) Write the chemical equation
.
[tex]Pb(NO_3)_2+K_2SO_4\rightarrow PbSO_4+KNO_3[/tex]List the elements (or polyatomic ions) in the reactants.
Pb: 1
NO3: 2
K: 2
SO4: 1
List the elements (or polyatomic ions) in the products.
Pb: 1
NO3: 1
K: 1
SO4: 1
Balance K.
[tex]Pb(NO_3)_2+K_2SO_4\rightarrow PbSO_4+2KNO_3[/tex]List the elements (or polyatomic ions) in the reactants.
Pb: 1
NO3: 2
K: 2
SO4: 1
List the elements (or polyatomic ions) in the products.
Pb: 1
NO3: 2
K: 2
SO4: 1
4) Balanced chemical equation.
[tex]Pb(NO_3)_{2(aq)}+K_2SO_{4(aq)}\rightarrow PbSO_{4(s)}+2KNO_{3(aq)}[/tex].
When filling orbital with electrons wefill according to Diagonal filling rulefill up s orbitals, then p orbitals, then d orbitalsfilling according to electrons spinfill each energy level before moving up
Explanation:
Orbitals are filled according to the aufbau principle. That is, lower energy orbitals are filled before higher energy orbitals are filled. Therefore, fill each energy level before moving up
Answer:
The second last option is correct.
2. Infer what is meant by an amorphous solid.
Answer:
Amorphous solid is a form of solid
Explanation:
Amorphous solid is a solid in which atoms are not arranged in a definite geomatric pattern for eg. glass,paper etc
an aqueous sodium acetate, nac2h3o2 , solution is made by dissolving 0.185 mol nac2h3o2 in 0.620 kg of water. calculate the molality of the solution.
The Molality of the aqueous sodium acetate,NaC2H3O2 solution is 0.298m.
Molality is defined as the amount of solute expressed in the number of moles present per kilogram of solvent. The units of molarity are mol/kg. The formula used to calculate molality is ,
Molality of the solution=moles of the solute /mass of the solvent
An aqueous sodium acetate solution is made by dissolving 0.185 mole NaC2H3 in 0.620 kg of water. here solvent is the water and solution is sodium acetate.
Moles of NaC2H3O2 = 0.185 mole
Mass of solvent = 0.620 kg
putting all values in the expression of molality we get,
Molality of NaC2H3O2 = 0.185 mole / 0.620
=0.298m
Hence, the molality of solution is 0.298 m.
To learn more about Molality please visit:
https://brainly.com/question/24065939
#SPJ4
Will an aluminum ball with a density of 2.70 g/ml sink or float
The aluminum ball with a 2.70 g/mL will sink when placed in a water.
How do I know if the aluminum ball will sink?The density of a substance is defined as the mass per unit volume of the substance i.e
Density = mass / volume
Substance with higher density tends to sink when place in a liquid of lower density.
Fom the question given above, we were told that the density of the aluminum ball is 2.7 g/mL. We know also that the density of water is 1 g/mL.
If the aluminum ball is placed in the water, the aluminum ball will sink because it's density is greater than that of water.
Learn more about density:
https://brainly.com/question/952755
#SPJ1
how is the change in electronenergy related to the frequency of light emittedin electronic transitions?
A photon of light is released when an electron in its orbit around an atom transitions from a high energy state to a lower energy state. The statement E=hf, where h is Planck's constant.
It can be used to relate the energy of the photon to the frequency f of the photon, which is related to the color of the photon. The difference in energy between the two states is what causes the photon's varied wavelength (or, alternatively, frequency). The element's spectrum is made up of these released photons. The atomic emission spectrum of an element shows only specific colors, which indicates that only specific light frequencies are emitted. Excited electrons that revert to the ground state result in atomic emission spectra. The energy of the particular electrons are reflected in the light that is emitted. Because each element has a unique collection of electron energy levels, each element's emission spectrum is unique. The disparities between various pairs of numerous energy levels are shown by the emission lines. As electrons transition from higher energy orbitals to lower energy orbitals, lines (photons) are released. Nuclear Spectra. When atoms are stimulated, they release light at specific wavelengths that are associated with various colors.
Every element generates an own collection of spectral lines. Since no two elements produce the identical spectral lines, the line spectrum of an element can be used to identify it.
To know more about electronic transition, please refer:
https://brainly.com/question/28295405
#SPJ4
a student needs to prepare 250 ml of a 0.800 m aqueous solution of sucrose, c12hz2011 (aq), which is used frequently in biological experiments 200 ml 250 ml 150 200 100 150 100 250 ml which type of glassware should be used to make this solution (assuming that the accuracy of the concentration is important)? 0 a how should the correct amount of solute be obtained? measure out x cm of sucrose with a ruler: measure out x g of solid sucrose on a balance. measure out x mol of solid sucrose on a molemeter based on the selected correct unit; what is the value of x?
The type of glassware that students need to use to prepare 250 ml of a 0.800 m aqueous solution of sucrose is a volumetric flask and the correct amount of solute to use is 68.46g.
It is always recommended to use volumetric flask when you make sucrose solution, as accuracy is very important. Other glassware can be used to make water measurements more accurate, but it is always better to use a volumetric flask to this stock solution. and the correct amount of solute to use can be calculate as follow:
In this case, sucrose is a solid compound, so the best way to measure it is to use a balance and weigh the required mass based on the concentration of the solution. Therefore, it is best to measure grams of solute on a scale.
The amounts required are:
M = n/V
n = M*V
n = 0.800 * 0.250 = 0.2 moles
To get the mass:
m = n*MM
The molar mass of sucrose is 342.3 g/mol.
m = 0.2 * 342.3
m = 68.46g
Finally, after we have weighed the mass of sucrose we need, so all that remains is to add the solute to the volumetric flask and add water. In this way, sucrose mixes with water into a solution. Then, to make the solution 0.800M, the volume should be 250mL.
learn more about sucrose here https://brainly.com/question/15074456
Picture in the bottom
octyl formate is an ester that has the flavor of oranges. it can be synthesized from an alcohol and a carboxylic acid. what alcohol is needed to make octyl formate? choose... what carboxylic acid is needed to make octyl formate?
Octanol alcohol is needed to make octyl formate and Formic Acid carboxylic acid is needed to make octyl formate.
The organic substance 1-octanol, commonly referred to as octan-1-ol, has the chemical formula CH3(CH2)7OH. The alcohol is fatty. In general, octanols refer to a wide variety of different isomers. In the industrial setting, octanol is mostly generated by oligomerizing ethylene with triethyl aluminum, followed by oxidation of the resulting alkylaluminium products. The Ziegler alcohol synthesis is the name of this method.
An organic acid with a carboxyl group connected to an R-group is referred to as a carboxylic acid in organic chemistry. R stands for the alkyl, alkenyl, aryl, or other group, and the typical formula of a carboxylic acid is RCOOH or RCO2H. It is common to find carboxylic acids.
learn more about octanol here
https://brainly.com/question/28168707
#SPJ4
28.The region labeled C above refers to what type of solution?Select one:a. Acidicb. Basicc. Neutrald. Salt
Answer
B. Basic
Explanation
Any solution above 7.0 (from 7.1 to 14.0) is alkaline/basic. This type of solution is at 11, meaning it is alkaline/basic.
16.Sulfur has 16 electrons. After it bonds with Magnesium it acquires a 2- charge. How many electrons does the S2- ion contain?Select one:a. 2b. 8c. 16d. 18
18 electrons.
Explanations:According to the question, we have that sulphur has 16 electrons and after bonding with magnesium acquired a 2-charge. The sulphur ion S2- shows that sulphur has gained 2electrons to become stable.
Amount of electron S2- have = 16 electron + 2electrons
Amount of electron S2- have = 18 electrons
Hence the number of electrons S2- ion have is 18 electrons.
Explain the Different types of electromagnetic wave
The different types of electromagnetic radiation are: Radio waves, Microwave, Infrared waves, Visible light, Ultraviolet waves, X-rays, Gamma rays. Radio waves have the lowest frequencies, and gamma rays have the highest frequencies.
Radio waves are electromagnetic radiation with frequencies as high as 300 gigahertz (GHz) to as low as 30 hertz (Hz). At 300 GHz of frequency, the corresponding wavelength is 1 mm, and at 30 Hz it is estimated to be 10,000 km.
Microwaves are a type of electromagnetic radiation. The wavelengths of microwave ranges from about one meter to one millimeter; with frequencies between 300 MHz (1 m) and 300 GHz (1 mm).
Infrared waves are a type of electromagnetic radiation. They are often referred to as thermal radiation because they are emitted from objects that are hot.
The visible spectrum is the portion of the electromagnetic spectrum that can be seen by the human eye. The spectrum ranges from 380 to 750 nanometers. The colors of the visible spectrum are often described as a rainbow: red, orange, yellow, green, blue, and violet.
Ultraviolet (UV) radiation is a type of electromagnetic radiation that is located before the visible range this region is invisible to the human eye. It has a shorter wavelength than visible light and is able to penetrate the atmosphere, making it harmful to living organisms.
X-rays are a type of electromagnetic radiation that is used to create images of the inside of the body. X-rays are produced by a machine called an X-ray tube. X-rays are used to diagnose many different conditions, including broken bones, tumors, and pneumonia.
Gamma rays are much more energetic than any of those other types of radiation. In fact, gamma rays are so energetic that they can actually kill living cells.
To know more about Planck's Law, click below:
https://brainly.com/question/1673393
#SPJ9
Dr. West mixes zinc (Zn) and hydrochloric acid (HCl) together in his laboratory. The two chemicals react to form hydrogen gas (H2) and zinc chloride (ZnCl2).
Dr. West mixes zinc (Zn) and hydrochloric acid (HCl) together in his laboratory. The two chemicals react to form hydrogen gas (H₂) and zinc chloride (ZnCl₂). The balance chemical equation is given as :
Zn + 2HCl ----> ZnCl₂ + H₂
Zinc react very rapidly with hydrochloric acid to form zinc chloride and hydrogen gas. This reaction is called as displacement reaction because zinc is displaces the hydrogen and form zinc chloride and hydrogen gas. The reaction is exothermic because it releases a lot of heat.
Thus, Dr. West mixes zinc (Zn) and hydrochloric acid (HCl) together in his laboratory. The two chemicals react to form hydrogen gas (H₂) and zinc chloride (ZnCl₂). The balance chemical equation is given as :
Zn + 2HCl ----> ZnCl₂ + H₂
To learn more about Displacement reaction here
https://brainly.com/question/3172917
#SPJ1
(Multiple Choice) List the gases H2O, He, HCI, BrF, and NO2 in order of increasing average molecular velocityat 25°C.1. Rates of effusion:BrF< H20 < HC1 < NO2 < He2. Rates of effusion: BrF < He < HC1 < H2 < NO23. Rates of effusion: He < BrF < HC1
The average molecular velocity can be defined as follows:
[tex]v_m=\sqrt[]{\frac{3RT}{M}}[/tex]Where,
R is a constant
T is the temperature
M is the molar mass
If we assume that the temperature is the same for all gases, the velocity will vary according to its molar mass. We see that the molar mass is inversely proportional to the speed, the greater the mass of the gas, the slower it will move. Therefore we are going to determine the molar mass of the gases:
Therefore, the order according to the average velocity will go. We must organize from the largest molar mass to the smallest molar mass.
BrF
The answer will be 6. Option
A 35.40 gram hydrate of sodium carbonate, Na2CO3•nH2O, is heated to a constant mass. Its final weight is 30.2 g. What is formula for the hydrate?A. Na2CO3∙1H2OB. Na2CO3∙2H2OC. Na2CO3D. Na2CO3∙3H2O
First, we have to calculate the molecular weights of each molecule:
[tex]\begin{gathered} Na_2CO_3\text{ : 23*2+12+16*3= 106 g/mol} \\ H_2O\text{ : 1*2+16= 18 g/mol} \end{gathered}[/tex]Then, we have to calculate the number of grams of water. We can calculate them because the process of evaporation lets us know the water amount that was retired:
[tex]g\text{ H}_2O\text{ = 35.40 g - 30.2 g=5.2 g H}_2O[/tex]Then, we're gonna convert the grams of sodium carbonate alone (30.2 g) and the grams of water to moles:
[tex]\begin{gathered} 30.2\text{ g Na}_2CO_3\text{ * }\frac{1\text{ mol}}{106\text{ g}}=\text{ 0.2849 mol Na}_2CO_3\text{ }\approx0.3\text{ mol Na}_2CO_3 \\ \\ 5.2\text{ g H}_2O\text{ * }\frac{1\text{ mol}}{18\text{ g}}=\text{ 0.288 mol H}_2O\text{ }\approx\text{ 0.3 mol H}_2O \end{gathered}[/tex]It means that the mole relation is 1:1 approx, as it is the same amount for both. Then, the formula is going to be:
[tex]Na_2CO_3\text{ . 1H}_2O[/tex]It means that the answer is A.
How many grams of calcium phosphate (Ca3(PO4)2) re theoretically produced if we start with 3.40 moles of Ca(NO3)2 and 2.40moles of Li3PO4?Reaction: 3Ca(NO3)2 + 2L13PO4-6LINO3 + Ca3(PO4)2A) 310B) 1054C) 248D) 351
1) Balance the chemical equation.
[tex]3Ca(NO_3)_2+2Li_3PO_4\rightarrow6LiNO_3+Ca_3(PO_4)_2[/tex]2) List the known and unknown quantities.
Reactant 1: Ca(NO3)2.
Amount of substance: 3.40 mol.
Reactant 2: Li3PO4.
Amount of substance: 2.40 mol.
Product: Ca3(PO4)2
Mass: unknown.
3) Which is the limiting reactant?
3.1-How many moles of Li3PO4 do we need to use all of the Ca(NO3)2?
The molar ratio between Li3PO4 and Ca(NO3)2 is 2 mol Li3PO4: 3 mol Ca(NO3)2.
[tex]mol\text{ }Li_3PO_4=3.40\text{ }mol\text{ }Ca(NO_3)_2*\frac{2\text{ }mol\text{ }Li_3PO_4}{3\text{ }mol\text{ }Ca(NO_3)_2}=2.2667\text{ }mol\text{ }Li_3PO_4[/tex]We need 2.2667 mol Li3PO4 and we have 2.40 mol Li3PO4. We have enough Li3PO4. This is the excess reactant.
3.2-How many moles of Ca(NO3)2 do we need to use all of the Li3PO4?
The molar ratio between Li3PO4 and Ca(NO3)2 is 2 mol Li3PO4: 3 mol Ca(NO3)2.
[tex]mol\text{ }Ca(NO_3)_2=2.40\text{ }mol\text{ }Li_3PO_4*\frac{3\text{ }mol\text{ }Ca(NO_3)_2}{2\text{ }mol\text{ }Li_3PO_4}=3.60\text{ }mol\text{ }Ca(NO_3)_2[/tex]We need 3.60 mol Ca(NO3)2 and we have 3.40 mol Ca(NO3)2. We do not have enough Ca(NO3)2. This is the limiting reactant.
4) Moles of Ca3(PO4)2 produced from the limiting reactant.
We have 3.40 mol Ca(NO3)2 of the limiting reactant.
The molar ratio between Ca(NO3)2 and Ca3(PO4)2 is 3 mol Ca(NO3)2: 1 mol Ca3(PO4)2.
[tex]mol\text{ }Ca_3(PO_4)_2=3.40\text{ }mol\text{ }Ca(NO_3)_2*\frac{1\text{ }mol\text{ }Ca_3(PO_4)_2}{3\text{ }mol\text{ }Ca(NO_3)_2}=1.1313\text{ }mol\text{ }Ca_3(PO_4)_2[/tex]5) Mass of Ca3(PO4)2 produced.
The molar mass of Ca3(PO4)2 is 310.1767 g/mol.
[tex]g\text{ }Ca_3(PO_4)_2=1.1333\text{ }mol\text{ }Ca_3(PO_4)_2*\frac{310.1767\text{ }g\text{ }Ca_3(PO_4)_2}{1\text{ }mol\text{ }Ca_3(PO_4)_2}[/tex][tex]g\text{ }Ca_3(PO_4)_2=351.526\text{ }g\text{ }Ca_3(PO_4)_2[/tex]The mass of Ca3(PO4)2 produced is 351 g Ca3(PO4)2.
Option D.
.