Quantitative Relationships Assignment
Complete the following assignment and submit your work to the teacher.
Before you upload your file, ensure your name appears on the first page of your document.
1. What is the molar ratio of C4H10:CO2 for the following equation:
2C4H10 + 13O2  8CO2 + 10H2O
2. How many moles of O2 can be produced by letting 12.0 mol of KClO3 react in the
following equation?
2KClO3  2KCl + 3O2
3. Magnesium combines with chlorine to form magnesium chloride during a synthesis
reaction.
a. Write the chemical equation for this reaction.
b. How many moles of magnesium chloride can be produced with 3 moles of
chlorine?
4. A chemist describes a particular experiment in this way: "0.4 mol of H2O2 decomposed
into 0.4 mol of H2O and 0.2 mol of O2." Express the chemistry of this reaction by a
conventional equation.
5. The alcohol in "gasohol" burns according to the following equation.
C2H5OH + 3O2  2CO2 + 3H2O
a. If 25 mol of C2H5OH burns this way, how many moles of oxygen are needed?
b. If 23 mol of carbon dioxide is produced by this reaction, how many moles of
oxygen are consumed?
6. How many moles of NaHCO3 can be produced from 125 mol of NaCl?
H2O + NaCl + NH3 + CO2  NH4Cl + NaHCO3
7. How many moles Of H2O are produced when 6 mol of O2 is consumed in burning
methyl alcohol, CH3OH, according to the following equation?
2CH3OH + 3O2  2CO2 + 4H20
8. Solutions of iron(III) chloride, FeCl3, are used in photoengraving and to make ink. This
compound can be made by the following reaction.
2Fe + 3Cl2  2FeCl3
a. How many moles of FeCl3 form from 31 mol of Cl2?
b. How many moles of Fe are needed to combine with 5 mol of Cl2 by this reaction?
c. If 0.62 mol of Fe is to be used by this reaction, how many moles of FeCl3 form?
9. Ammonia is produced synthetically by the reaction: (Q represents energy)
N2 + 2H2  2NH3 + Q
a. Is this an exothermic or endothermic process?
b. How many moles of NH3 are formed when 1 mol of N2 reacts with hydrogen?
c. If 18 x 1023 molecules of H2 react with nitrogen, how many moles of NH3 are
produced?