The correct option is D. 0.2 M CaCl2 is has the lowest freezing point.
What is aqueous solution?When one significance liquefies into another, a solution is formed. A solution is a homogenous mixture consisting of a solute dissolved into a solvent. The solute is the essence that is being dissolved, while the solvent is the dissolving medium. Solutions can be formed with multiple different classifications and forms of solutes and solvents. In this branch, we will focus on a resolution where the solvent is water.
An aqueous solution is a moisture that contains one or more dissolved essence. The dissolved importance in an aqueous solution may be solids, gases, or different liquids.In directive to be a true solution, an assortment must be stable. When sugar is fully dissolved into moisture, it can stand for an undetermined amount of time, and the sugar will not recompense out of the solution. Further, if the sugar-water solution is passed through a filter, it will stay with the water. This is because the liquefied particles in a resolution are very small, usually less than 1nm in diameter. Solute particles can be atoms, ions, or molecules, counting on the type of essence that has been dissolved.To learn more about aqueous solution, refer to:
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The buffer is prepared by adding 250mL of 0.80M NH3 to 150mL of 0.50M NH4NO3. What is the pH of the final solution (Kb for NH3 = 1.8 x 10^-5)
The pH of the solution is obtained to be 9.67.
What is a buffer?A buffer is a solution that serves to militate against changes in acidity or alkalinity. The buffer is often made of a solution of a strong acid and its salt or a weak base and its salt.
Now we have the that;
Number of moles of base = 250 /1000 * 0.80 = 0.2 moles
Number of moles of salt = 150/1000 * 0.50 = 0.075 moles
Total volume of the solution = 250 + 150 = 400 mL or 0.4 L
Molarity of the base = 0.2 moles/0.4 L = 0.5 M
Molarity of the salt = 0.075 moles/ 0.4 L = 0.1875 M
pKb = - log( 1.8 x 10^-5) = 4.74
pOH = pKb + log [salt/base]
pOH = 4.74 + log (0.1875/ 0.5)
pOH = 4.33
pH = 14 - 4.33
pH = 9.67
The pH of the solution is obtained to be 9.67.
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If charcoal and sugar were the the main impurities present in crude acetanilide would recrystallisation from water be a good method of purification explain why?
Yes, recrystallization from water would be a viable technique of purification if crude acetanilide contained sugar and charcoal. Due to their physical insolubility, charcoal found in crude acetanilide and water will form a heterogeneous combination. Charcoal will separate during crystallization because it is insoluble in water. Sugar and the unreconstituted crude acetanilide make up the remaining portion of the combination. Crude acetanilide will crystallize in this combination and separate from the sugar and water solution. Filtration will be used to capture the crude acetanilide that has solidified. Sugar and water make a soluble solution, thus they are kept separate. This is how the charcoal and sugar combination is purified and its constituent parts are separated from crude acetanilide using the recrystallization process from water.
How many moles of Chromium is in 4.41 ×10^24 atoms
7.32 moles of Chromium is present in 4.41 × 10²⁴ atoms.
How to find the number of moles ?Number of moles = [tex]\frac{\text{Given number of atoms}}{\text{Avogadro's Number}}[/tex]
What is Avogadro's Number ?
Avogadro's number is the number of particles in one mole of substance. 6.022 × 10²³ is known as Avogadro's Constant / Avogadro's Number.
Avogadro's Number = 6.022 × 10²³
Now put the values in above formula we get
Number of moles = [tex]\frac{\text{Given number of atoms}}{\text{Avogadro's Number}}[/tex]
= [tex]\frac{4.41 \times 10^{24}}{6.022 \times 10^{23}}[/tex]
= 7.32 moles
Thus from the above conclusion we can say that 7.32 moles of Chromium is present in 4.41 × 10²⁴ atoms.
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Chemical reaction when chromium metal is immersed in an aqueous solution of cobalt(II)
The chemical equation for the reaction is [tex]2Cr (s) + 3CoCl_2 (aq) --- > 2CrCl_3 (aq) + 3Co (s)[/tex]
Chemical reactionChromium metal is higher in the reactivity series than cobalt. Thus, chromium will displace cobalt from solutions.
Therefore, the equation for the reaction between chromium metal and cobalt (II) chloride will be written as:
[tex]2Cr (s) + 3CoCl_2 (aq) --- > 2CrCl_3 (aq) + 3Co (s)[/tex]
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Chromium metal is immersed in an aqueous solution of cobalt(II) chloride. Express your answer as a chemical equation. Identify all of the phases in your answer. Enter no reaction if no reaction occurs.
help me out with this question
The concentration will be 12 M. The first option is the correct one.
ConcentrationIt is calculated by dividing the number of moles of solute present in a solution by the volume of the solution.
In this case, the number of moles of solute = 1.2 mols
volume of solvent = 100 mL or 0.1 L
Concentration of the solution = 1.2/0.1 = 12 mol/L or 12 M
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I need help with my work
Answer: D. 3Ag+ + PO43- = Ag3PO4
Explanation:
Overall Chemical Equation:
Ensure that the elements on both sides of the equation are balanced.
3C2H3AgO2 + Na3O4P = Ag3PO4 + 3C2H3NaO2
Solubility Equation:
Determine the state or phase of each substance (gas=g, liquid=l, solid/non-soluble=s, aqueous/soluble=aq) in its undissociated form.
3C2H3AgO2(aq) + Na3O4P(aq) = Ag3PO4(s) + 3C2H3NaO2(aq)
Complete Ionic Equation:
The complete ionic equation includes spectator ions. Write it by breaking all the soluble ionic compounds into their respective ions.
3Ag+(aq) + 3CH3COO-(aq) + 3Na+(aq) + PO43-(aq) = Ag3PO4(s) + 3Na+(aq) + 3CH3COO-(aq)
Net Ionic Equation:
The balanced net ionic equation includes only species that are involved in the reaction. It can be found by removing ions that occur on both the reactant and product side of the complete ionic equation.
3Ag+(aq) + PO43-(aq) = Ag3PO4(s)
3 Br2 + 6 OH1- → 5 Br1- + BrO31- + 3 H2O
If 8.5 moles of Br2 are reacted with an unlimited supply of OH1-, how many moles of BrO31- can be formed?
Answer:
2.8 moles BrO₃⁻
Explanation:
To find the amount of moles, you need to convert moles Br₂ to moles BrO₃⁻ using the mole-to-mole ratio. This ratio is made up of the balanced equation coefficients in front of the relevant molecules.
3 Br₂ + 6 OH⁻ -----> 5 Br⁻ + 1 BrO₃⁻ + 3 H₂O
8.5 moles Br₂ 1 mole BrO₃⁻
----------------------- x ---------------------- = 2.8 moles BrO₃⁻
3 moles Br₂
An analyst prepared a sucrose solution by weighing 1kg of water and add 1.5kg of sucrose. what is the concentration of the resultant solution in mass percent
The concentration of solution in mass percent is 60%.
What is mass percentage?Mass percentage refer to the percentage of solute present in solution.
The concentration of substance can be expressed in mass percent.
So, we can write,
Mass percent = mass of solute / mass of solution x 100.
Mass of solution = mass of solute + solvent.
Here, sucrose is the solute and water is solvent.
Mass of solute is 1.5Kg and mass of solvent is 1Kg.
Mass of solution = 1.5 + 1 = 2.5 Kg.
Mass percent = 1.5/2.5x100
So, Concentration of solution in mass percent = 60%.
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significant use of boiling point in daily life
Answer:
boiling point can be used to tell how long something I.e water would take to boil.
boiling point can also tell us the amount if heat needed to be applied for the substance to boil
1. Based on the observed performance of the air bag models and the amounts of sodium bicarbonate and acetic acid (vinegar) needed for an automotive air bag of 80 or 160 L, are these reactants a good substitute for sodium azide? One additional note regarding sodium azide: the rate of inflation after a triggering impact is 40 milliseconds (0.04 s).
Sodium bicarbonate and acetic acid are not good substitute for sodium azide in airbags since the require more mass and produce less gas.
Which is the better chemical for an airbag?The chemical equation for the production of nitrogen gas from sodium azide is given below:
NaN₃ → 2 Na + 3 N₂1 mole or 66 go of sodium azide produces 3 moles or 67.2 L of nitrogen gas.
The equation for the production of carbon dioxide from sodium bicarbonate and acetic acid is given below:
Na₂CO₃ + CH₃COOH → CH₃COONa + CO₂ + H₂O1 mole, 106 g of Na₂CO₃ and 1 mole, 82 g of CH₃COOH are required to produce 1 mole or 22.4 L of CO₂.
The mass of sodium azide required is less than that of sodium bicarbonate and acetic acid required. Also, sodium azide produces a greater volume of gas. Therefore, sodium bicarbonate and acetic acid are not good substitute for sodium azide in airbags.
In conclusion, sodium azide is a better choice in airbags.
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in gas expansion, 89J of heat is absorbed from surroundings and the energy of the system is decreased by 125J. Calculate the work done
From the first law of thermodynamics, the work done is -36 J.
What is the work done?We are told that the gas is expanding hence it does work while heat is absorbed from the surroundings. This implies that q is positive while w is negative.
Hence;
U = q - w
w = q - U
w = 89J - 125J
w = -36 J
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15) The average human is ~60% water, which translates to ~44.3 kg of water. If you eat a Reece's peanut butter cup (105 Calories or 4.39 x 105J), how many degrees Celsius (°C) should the 44.3kg of water rise. The specific heat of water is 4.184 J/g.°C. A) 2.37 x 103°C B) 5.66 x 104°C C) 41.5°C D) 2.37°C E) 0.566°C 4.39x1055 0.043 y 4.18488.0
Answer: D) 2.37°C
Explanation:
[tex]4.39x10^5J(\frac{g°C}{4.184J} )(\frac{kg}{1000g})(\frac{1}{44.3kg} )[/tex] [tex]=2.37°C[/tex]
A solution is prepared by mixing 200.0 g of water, H2O, and 300.0 g of
ethanol, C2H5OH. Determine the mole fractions of each substance.
Answer:
Mole Fraction (H₂O) = 0.6303
Mole Fraction (C₂H₅OH) = 0.3697
Explanation:
(Step 1)
Calculate the mole value of each substance using their molar masses.
Molar Mass (H₂O): 2(1.008 g/mol) + 15.998 g/mol
Molar Mass (H₂O): 18.014 g/mol
200.0 g H₂O 1 mole
--------------------- x ------------------ = 11.10 moles H₂O
18.014 g
Molar Mass (C₂H₅OH): 2(12.011 g/mol) + 6(1.008 g/mol) + 15.998 g/mol
Molar Mass (C₂H₅OH): 46.068 g/mol
300.0 g C₂H₅OH 1 mole
---------------------------- x -------------------- = 6.512 moles C₂H₅OH
46.068 g
(Step 2)
Using the mole fraction ratio, calculate the mole fraction of each substance.
moles solute
Mole Fraction = ------------------------------------------------
moles solute + moles solvent
11.10 moles H₂O
Mole Fraction = -------------------------------------------------------------
11.10 moles H₂O + 6.512 moles C₂H₅OH
Mole Fraction (H₂O) = 0.6303
6.512 moles C₂H₅OH
Mole Fraction = -------------------------------------------------------------
11.10 moles H₂O + 6.512 moles C₂H₅OH
Mole Fraction (C₂H₅OH) = 0.3697
Which of the following rules is applicable for balancing a chemical equation?
Change only the coefficients
Add the coefficients and change the subscripts
Change only the subscripts
Change the coefficients and the subscripts
Answer:
A.) Change only the coefficients
Explanation:
An equation is balanced when there is an equal quantity of each type of element on both sides of a reaction. When balancing an equation, the only way to manipulate the amounts of each element is by changing the coefficient values. The coefficients alter the amount of each molecule in the reaction.
The subscripts cannot be altered. If you were to change the subscripts, you would be altering the amount of atoms in a particular molecule.
please help me with this question as soon as possible
Answer:
nah what questionExplanation:
When 50 electrons drop from energy level 4 to energy level 2, how many photons of light are given off?
1 photon
100 photons
2 photons
50 photons
The number of photons given off will be 50 photons.
To find the answer, we need to know about the plank's equation.
How to find the number of photons emitted?We have the expression for energy of a single electron in eV as,[tex]E=-13.6(\frac{1}{(n_f)^2}- \frac{1}{(n_i)^2})eV\\[/tex]
We have,[tex]n_f=4\\n_i=2\\N=50[/tex]
Substituting values, we get,[tex]E=-13.6(\frac{1}{(4)^2}- \frac{1}{(2)^2})eV\\\\E=-13.6*-0.188=2.55eV[/tex]
For N electrons,[tex]E=50*2.55eV=127.5eV[/tex]
We have the plank's equation,E=nhf
From this, the number of photons emitted from 50 electrons will be,[tex]n=\frac{E}{h*f} =\frac{127.5*1.67*10^{-19}J}{(6.63*10^-34)Js} \\[/tex]
To find n, we have to find the frequency f. For that, we have the equation,[tex]\frac{1}{wave length}=R_H(\frac{1}{(n_i)^2}- \frac{1}{(n_f)^2})\\\\1/wv= 1.1*10^5(\frac{1}{(2)^2}- \frac{1}{(4)^2})=20625cm^{-1}.\\wavelength=486nm.[/tex]
Thus, frequency will be,[tex]f=\frac{c}{wavelength} =\frac{3*10^8}{486*10^{-9}} =6.172*10^{14}s{-1}[/tex]
Then, the number of photons will be,[tex]n=\frac{E}{h*f} =\frac{127.5*1.67*10^{-19}J}{(6.63*10^-34)Js*6.17*10^{14} s^{-1}} \\\\n=52.05 photons[/tex]
Thus, we can conclude that, the number of photons given off will be 50 photons.
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What color does red cabbage juice make when mixed with a citrus cleaner?
What color does red cabbage juice make when mixed with a dishwasher soap?
(WILL MARK BRAINLIEST!!!)
Answer:
Explanation:
green
Calculate the freezing point of a solution that contains 8.0 g of sucrose (C12H22O11) in 100 g of H2O. Kf for H2O = 1.86C/m
Group of answer choices
A. 0.44 degrees Celsius
B. 0.044 degrees Celsius
C. 0.39 degress Celsius
D. 0.22 degress Celsius
The freezing point of the sucrose solution is -0.435°C.
What is the freezing point of the solution?The freezing point of the solution is determined from the freezing point depression formula below:
ΔT = mKf(H₂O)Kf(H₂O) = 1.86 Cm
m is molality of solution = moles of solute/mass of solvent
moles of sucrose = 8.0/342.3 = 0.0233 moles
m = 0.0233/0.1 = 0.233 molal
ΔT = 0.233 m * 1.86°C/m.
ΔT = 0.435 °C.
Freezing point of sucrose solution = 0°C - 0.435°C
Freezing point of sucrose solution = -0.435°C.
In conclusion, the freezing point of sucrose solution is determined from the freezing point depression.
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The atom is sometimes said to be similar to a miniature planetary system, with electrons orbiting the nucleus. What does the uncertainty principle have to say about this view of the atom?
Answer:
The uncertainty principle says this view is only a guess, a snapshot of what the electrons around the nucleus could possibly look like. Specifically, the uncertainty principle says that we cannot know the exact location and speed of the electrons. Therefore, the planetary-like arrangement of the electrons around the nucleus is rarely ever assumed.
a saline solution begins to freeze at -1.13 degrees. Express the concentration of NaCl in this solution in mass%. Kf for water is 1.86C degree/m.
The Percentage mass of NaCl is 1.78%.
What is the percent mass concentration of the NaCl in saline solution.The percent mass concentration of NaCl in the saline solution is determined from the molality of the solution.
The molality of the solution is further obtained from the freezing point depression formula.
The freezing point depression formula is given as follows:
ΔT = Kf * m * iwhere;
ΔT is the freezing point changeKf is a constantm is the molality of the solutioni is the van't Hoff factorFor the solution of NaCl;
ΔT = 0 - (-1.13) = 1.13
Kf = 1.86 °/m
i = 2
m = ΔT/(Kf * i)
m = 1.13/(1.86 * 2)
m = 0.3038 mol/kg
molar mass of NaCl = 58.5 g/mol
Mass of NaCl = 0.3038 * 58.5 = 17.8 g in
Percentage mass of NaCl = (17.8/1000) * 100
Percentage mass of NaCl = 1.78%
In conclusion, the percent mass of NaCl is obtained from the molality of the solution.
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convert ethene to propanamine
STEP 1: ON TREATING CHLOROETHANE WITH KCN WE GET PROPANE - NITRILE . STEP 2: ON TREATING PROPANE - NITRILE WITH LiAlH4 WE GET PROPANAMINE.
The protons of a __________ acid would be completely transferred to the solvent when dissolved.
Group of answer choices
inert
neutral
strong
weak
The protons of a strong acid would be completely transferred to the solvent when dissolved.
What is an acid?An acid is defined as a substance that contains hydrogen that it can donate when reacting with another substance.
There are two main types of an acid which include:
weak acids andstrong acids.A strong acid is a type of acid that has the ability to donate it's hydrogen/ protons completely in a chemical reaction.
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can someone please fill this out for me
Filling out the table of elements below following the outlined order:
Calcium - symbol = Ca; Group =2; Period = 4; Ar = 134; Am =40.078u; Ph = solid; Density = 1.55; Bp = 1757K; Mp = 1115K.Vanadium - symbol = V; Group =5; Period = 4; Ar = 197; Am =50.9415u; Ph = solid; Density = 6.11; Bp = 3680K; Mp = 2183K.Manganese - symbol = Mn; Group =7; Period = 4; Ar = 127; Am = 54.938044u; Ph = solid; Density = 7.21; Bp = 2334K; Mp = 1519K.Cobalt: - symbol = Co; Group =9; Period = 4; Ar = 125; Am =58.933195 u; Ph = solid; Density = 8.90; Bp = 3200K; Mp = 1768K.Zinc: - symbol = Zn; Group = 12; Period = 4; Ar = 134; Am =65.38 u; Ph = solid; Density = 7.14; Bp = 1180K; Mp = 692.68K.Arsenic: - symbol = As; Group = 15; Period = 4; Ar = 197; Am = 74.9216 u; Ph = solid; Density = 5.75; Bp = 889K; Mp = 889K.Bromine: - symbol = Br; Group =17; Period = 4; Ar = 120; Am = 79.904 u; Ph = Liquid; Density = 3.1028; Bp = 332K; Mp = 265K.Meaning of ElementAn element can be defined as a substance that can not be broken down into simpler substances.
An element serves as a building blocks for compounds and mixtures.
In conclusion, each element and its property as requested in the table are given above.
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How many molecules are in 120.0 g of oxygen gas?
1.506 × 10²³ molecules in 120.0 g of oxygen gas.
What are molecules?The slightest particle of importance contains all of the physical and chemical properties of that substance. Molecules are made up of one or more atoms.
If they include more than one atom, the particles can be the same (an oxygen molecule has two oxygen atoms) or additional (a wetness molecule contains two hydrogen particles and one oxygen atom). Natural molecules, such as proteins and DNA, can be created up of many thousands of atoms.Particles are the introductory unit of an element. They consist of a nucleus and cover electrons. When an atom has an insufficient electron shell, it is said to have valence electrons. When two or more additional atoms come concurrently to share outer surface valence electrons, a chemical (covalent) bond is formed, and they join a lower power state. When atoms bond, significance is released in an exothermic response. If the covalent bond is broken and the molecule is split separated, it needs energy information and is thereby endothermic.To learn more about molecules, refer to:
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PLEASE ANSWER NEED BY MIDNIGHT TONIGHT!!!!!!
Radium-223 nuclei usually decay by alpha emission. Once in every billion decays, a radium-223 nucleus emits a carbon-14 nucleus.
Write a balanced nuclear equation for carbon-14 emission.
The equation for carbon-14 emission by Radium-223 nuclei is given below:
[tex]^{223}_{88}Ra \rightarrow\: ^{209}_{82}Pb + \:^{14}_{6}C[/tex]
What is radioactivity?Radioactivity is the spontaneous decay of a substance with emission of radiation.
The equation for carbon-14 emission by Radium-223 nuclei is given below:
[tex]^{223}_{88}Ra \rightarrow\: ^{209}_{82}Pb + \:^{14}_{6}C[/tex]
In conclusion, the emission of carbon-14 by Radium-223 nuclei produces Lead-209 nuclei.
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Analysis of a sample of hydrated salt shows that it contains 4.86 g Mg, 6.20 g P, 11.20 g O, and 5.40 g H2O. What is the formula of the hydrated salt?
Answer:
Mg₂P₂O₇ · 3 H₂O
Explanation:
(Step 1)
First, you need to convert each mass to moles via the molar masses of each element/compound.
Molar Mass (Mg): 24.305 g/mol
4.86 grams Mg 1 mole
------------------------ x ------------------------ = 0.200 moles Mg
24.305 grams
Molar Mass (P): 30.974 g/mol
6.20 grams P 1 mole
--------------------- x ------------------------ = 0.200 moles P
30.974 grams
Molar Mass (O): 15.998 g/mol
11.20 grams O 1 mole
----------------------- x ----------------------- = 0.700 moles O
15.998 grams
Molar Mass (H₂O): 2(1.008 g/mol) + 15.998 g/mol
Molar Mass (H₂O): 18.014 g/mol
5.40 grams H₂O 1 mole
-------------------------- x ----------------------- = 0.300 moles H₂O
18.014 grams
(Step 2)
To find the amount of each element/compound in the formula, you need to divide each molar value by the smallest molar value. This allows you to determine the accurate molar ratio the hydrated salt should have. In this case, 0.200 moles is the smallest value.
0.200 moles Mg / 0.200 = 1 mole Mg
0.200 moles P / 0.200 = 1 mole P
0.700 moles O / 0.200 = 3.5 moles O
0.300 moles H₂O / 0.200 = 1.5 moles H₂O
There can only be whole number amounts of each element/compound in the formula. Therefore, you need to multiply each amount by 2.
1 mole Mg x 2 = 2 moles Mg
1 mole P x 2 = 2 moles P
3.5 moles O x 2 = 7 moles O
1.5 moles H₂O x 2 = 3 moles H₂O
(Step 3)
Now that we know the amount of each element/compound, we can build the formula. The amount of each element is represented by subscripts and the amount of each compound (H₂O) is represented by coefficients.
Mg₂P₂O₇ · 3 H₂O
Which of the following was an incentive for profit to settle the Mississippi Valley region?
Availability of fish and furs
Abundance of Native Americans to convert to Catholicism
Mildness of the temperature of the region
Excitement of the wilderness
The correct option is (a) Availability of fish and furs. An incentive for profit to settle the Mississippi Valley region
Arkansas, Illinois, Iowa, Kentucky, Louisiana, Michigan, Minnesota, Mississippi, Missouri, North Dakota, Tennessee, Wisconsin, and South Dakota are among the 13 states that are either entirely or partially included in the division of Mississippi Valley region
The canoe was the first ferry to travel on the Mississippi River. Long before the white settlers ventured as far west as the Mississippi, it provided the Indians with a means of crossing. It is also one of the most significant commercial waterways in the world and a key fish and bird migration route in North America. Native Americans used the river for transportation and food while they lived along its banks.
Therefore, The correct option is (a) Availability of fish and furs. An incentive for profit to settle the Mississippi Valley region.
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What classifies a substance as an element?
What classifies a substance as a compound?
Actually, answer what the question is asking and give a short answer. No copying and pasting.
The difference between an element and a compound is that an element is a substance made of same type of atoms, whereas a compound is made of different elements in definite proportions.Examples of elements include iron, copper, hydrogen and oxygen. Examples of compounds include water (H2O) and salt (Sodium Chloride - NaCl).
12 Igneous rocks are formed by (1) sedimentation (2) fossilization (3) volcanic activity (4) freezing/thawing cycles
According to the research, the correct option is 3, Igneous rocks are those formed from a molten product from volcanic activity.
What are Igneous rocks?They are rocks of high resistance, isotropy, brittleness and density that are created from the cooling and solidification of the magma, whether fragmented or compact, that form at erupting volcanoes, that is, this substance, made up of molten rocks and other elements, is found inside the planet.
When the cooling process takes place superficially and quickly, extrusive igneous rocks are produced, among which are obsidian and basalt, they usually appear after the eruption of a volcano, since the ejected lava solidifies.
Therefore, we can conclude that according to the research, the correct option is 3, Igneous rocks are those formed from a molten product from volcanic activity.
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Determine the mass of CO2 produced when 51.2 g of CaO is reacted with 50.0 g of C according to the unbalanced chemical equation:
CaO (s) + C (s) ---> CaC2 (s) + CO2 (g)
Hint: You will need to balance the equation first.
The mass of CO2 produced will be 8.01 grams
Stoichiometric problemThe balanced equation of the reaction is written as:
[tex]2CaO (s) + 5C (s) --- > 2CaC_2 (s) + CO_2 (g)[/tex]
The mole ratio of CaO and C is 2:5 from the balanced equation.
Mole of 51.2 g CaO = mass/molar mass = 51.2/56 = 0.91 moles
Mole of 50.0 g C = 50/12 = 4.17 moles
From the mole ratio, 0.91 mole CaO will require 5/2 x 0.91 = 2.28 moles C.
This means 4.17 moles carbon is excessive. In other words, C is the limiting reagent.
The mole ratio of C and CO2 is 5:1. Thus, the equivalent mole of CO2 that will be produced from 0.91 moles C will be:
0.91/5 = 0.182 moles.
Mass of 0.182 moles CO2 = mole x molar mass = 0.182 x 44 = 8.01 grams
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