The Mole-multiple Choice

Question 1

A mole of potassium chloride (KCI) contains 6.02x10^23

Answer 1

Formula units KCI

Question 2

The SI unit of molar mass is the

Answer 2

Gram/mole

Question 3

Which conversion factor would you use to calculate correctly the mass of 2 moles of the element titanium?

Answer 3

47.87g Ti / 1 mol Ti

Question 4

How many moles of oxygen atoms do 1.5 moles of CO2 contain?

Answer 4

3.0 mole

Question 5

Which compound has the smallest molar mass?

Answer 5

H2O

Question 6

One mole of silicon (Si) has a mass of 28.086 g, and one mole of carbon has a mass of 12.011 g. What is the mass of one mole of silicon carbide (SiC)?

Answer 6

40.097 g

Question 7

Math and contains 75% carbon. What percent of methane is hydrogen?

Answer 7

25%

Question 8

The mole ratio of the elements in a compounds molecular formula is

Answer 8

The same as the mole ratio of the elements in its empirical formula

Question 9

Sodium bromide dihydrate is correctly written as

Answer 9

NaBr•2H2O

Question 10

As a hydrated compound is heated , it decreases in

Answer 10

Mass