Comprehensive Quiz: Module 5

Which of the following is the correct set of integer coefficients for the balanced equation respectively:
___ C5H12(g) + ___O2(g) → ___CO2(g) + ___H2O(g)

Which of the following gives the balanced equation for this reaction?

K3PO4(aq) + Ca(NO3)2(aq) → Ca3(PO4)2 (s)+ KNO3(aq)

What is the classification for this balanced reaction?

2Fe(s) + 6HCl (aq) → 2FeCl3 (aq)+ 3H2(g)

The atomic weight of copper is less than that of silver. If you have a 10 g sample of each of these metals, which of the following is true?

For the question(s) that follow, consider the following equation.

Mg3N2(s) + 6H2O(l) → 3Mg (OH)2(s) + 2NH3(g)

When 2 moles of Mg3N2 are allowed to react, how many moles of H2O also react?

In the reaction CH2O(g) + O2(g) → 2HCOOH(g), which species is the reducing agent?

The combustion of one mole of propane, C3H8, releases 531 kcal. How much heat is released by the combustion of 1.20 moles of propane?

The mass of an atom of 12C is exactly 12 atomic mass units. Which of the following describes a mole of 12C atoms?

O2 can be produced by the reaction 2 KClO3(s) → 2 KCl(s) + 3 O2(g). In one experiment 0.312 g of O2 was formed. How much KCl was produced?

In the industrial synthesis of acetic acid, methanol is reacted with carbon monoxide. The balanced equation for this reaction is:
CH3OH(g) + CO(g) → CH3COOH(l)
How many grams of CO(g) are required to produce 16.6 mol of acetic acid?

Diethyl ether can be made from ethanol. The reaction is:
2 C2H5OH(l) → (C2H5)2O(l) + H2O(l)
The percent yield of diethyl ether in one experiment was 94.0% and actual yield was 68.6 g. How much ethanol did the chemist use in this experiment?

What is the molar mass of Mg3(PO4)2, a substance formerly used in medicine as an antacid?

What is the molecular weight of ibuprofen, C13H18O2?

A bicycle manufacturer has a stock of 50 frames 70 wheels, and 120 reflectors. If each bicycle manufactured requires 4 reflectors, how many bicycles can the manufacturer make?

A person drinks 1.50 × 10^3 g of water, H2O, per day. How many moles is this?

Which of the following is true of all combustion reactions?

How many hydrogen atoms are there in 2.50 mol of C6H12O6?

Which of the following is true?

A serving of a particular fruit dessert contains 20.0 g of sugar. If all the sugar is sucrose, C12H22O11, how many molecules of sugar are present in this serving?

In the reaction of silver nitrate with sodium chloride, how many grams of silver chloride will be produced from 100. g of silver nitrate when it is mixed with an excess of sodium chloride? The equation for the reaction is below.

AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)

When solutions of H2SO4 and NaOH react, the balanced molecular equation is:
H2SO4(aq) + 2 NaOH(aq) → Na2SO4(aq) + 2 H2O(l)
How much Na2SO4 is obtained when 4.00 g of H2SO4 reacts with 2.00 g of NaOH?

In the reaction Pb(s) + 2 Ag+(aq) → Pb2+(aq) + 2 Ag(s), which species is reduced?

Ethanol is produced industrially by the acid catalyzed reaction of ethylene with water. The balanced equation for this reaction is:
C2H4(g) + H2O(g) → C2H5OH(l)
If water is present in excess, how many grams of ethanol can be produced from 7.24 mol of ethylene?

A typical deposit of cholesterol, C27H46O, in an artery has a mass of 3.90 mg. How many molecules of cholesterol are present in this deposit?

Which of the following is reduction?