Free Printable Mole Quantities Quiz

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Mole Quantities Quiz

Total questions: 24

Worksheet time: 1hrs 7mins

Name

Class

Date

How many hydrogen atoms are in the compound: (NH₄)₂CO₃

What is the molar mass of CO₂?

44 grams

44 amu

0.44 grams

2.6 x 10²⁵atoms

What is the percent composition of nitrogen in NH₃?

25%

14%

28%

82%

Which of the following is an empirical formula?

C₃H₃

Li₂CO₃

Na₂O₂

C₆H₁₂O₆

How many moles are contained in 45 grams of aluminum?

27 mol

1215 mol

1.7 mol

57 mol

How many moles of chlorine gas (Cl₂) are contained in 45 grams of pure sample?

35 mol

0.64 mol

1.3 mol

2.6 mol

How many atoms of are contained in a mole of sodium?

6.02 x 10²³ atoms

11 atoms

23 atoms

2 atoms

If the empirical formulas is CH and the molar mass is 78g/mol, what is the molecular formula?

C₆H₆

C₅H₁₈

6CH

1 mol = 6.02 x 10²³ _______

particles

grams

liters

Kelvin

10.

1 mol of gas at STP will occupy ___ of space.

6.02 L

22.4 L

10.23 L

12.01 L

11.

The molar mass of a substance can be found by...

adding up the masses listed on the periodic table

dividing by Avogadro's number

multiplying by 22.4

multiplying by Avogadro's number

12.

How many molecules are in a 10.0 L container of CO₂ (g) at STP?

2.69 x 10²³ molecules

5.87 x 10²³ molecules

6.12 x 10²³ molecules

3.47 x 10²³ molecules

13.

How many grams does 1.25 x 10²³ molecules of SF₆ weigh?

30.3 g

125 g

0.478 g

98.4 g

14.

A substance is found to be 40.2% Li and 59.8% P. Determine its empirical formula.

LiP

Li₃P

Li₂P₃

LiP₂

15.

A chemical has a molar mass of 90.08 g/mol and its empirical formula is CH₂O. Determine its molecular formula.

CH₂O

C₂H₄O₂

C₃H₆O₃

C₄H₈O₄

16.

Avogadro's number is...

6.02 x 10²³

6.78 x 10²²

6.13 x 10²⁴

6.04 x 10²¹

17.

What is STP?

States of Temperature and Pressure, 1 $1\degree C$ 0 atm

Standard Tire Pressure, 65 psi

Standard Temperature and Pressure, $0\degree C$ 1 atm

Standard Timing and Pressure, 273 K 0 atm

18.

Diatomic molecules are __________ found in nature as their single element: I, O, N, H, Br, Cl, or H.

often

never

sometimes

always

19.

The unit for mass is

atoms

molecules

liters

grams

20.

The unit for volume is

liters

grams

molecules

atoms

21.

The mass in grams of a compound is calculated from the

molar mass

atomic mass

22.

The representative particle for carbonate?

ions

formula units

atoms

molecules

23.

The representative particle for iron?

ions

formula units

atoms

molecules

24.

The empirical formula must be lowest whole number ratio.

True

False

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Mole Quantities Quiz

Total questions: 24

Worksheet time: 1hrs 7mins

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