Unit Test — Unit test

Question 1

Which describes the volume of 1 mol of gas at standard temperature and pressure?

Revolt · Accepted Answer

The volume is the same for any gas.

Question 2

Which must be the same when comparing 1 mol of oxygen gas, O2, with 1 mol of carbon monoxide gas, CO?

Revolt · Accepted Answer

the number of molecules

Question 3

Copper metal (Cu) reacts with silver nitrate (AgNO3) in aqueous solution to form Ag and Cu(NO3)2. The balanced chemical equation is shown below.Cu + 2AgNO3 Cu(NO3)2 + 2AgThe molar mass of Cu is 63.5 g/mol. The molar mass of Ag is 107.9 g/mol. What mass, in grams, of Ag is produced from a reaction of 31.75 g of Cu?

Revolt · Accepted Answer

107.9 grams

Question 4

Which statement best describes a mole?

Revolt · Accepted Answer

It is used for directly comparing the amounts of substances.

Question 5

Consider the equation below.N2 + 3H2 2NH3What is the mole ratio of hydrogen to ammonia?

Revolt · Accepted Answer

3:2

Unit Test — Unit test Answers

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