Free Printable Converting Grams to Moles

Worksheets

Converting Grams to Moles

Total questions: 25

Worksheet time: 25mins

Name

Class

Date

Convert 50.0 grams of H₂O to moles of H₂O.

901 moles

18.02 moles

2.77 moles

When converting a mass to moles, what unit must be in the denominator of the conversion factor?

grams

moles

grams/mole

Convert 13.25 grams of magnesium nitrate, Mg(NO₃)₂, to moles of the substance.

0.100 mole

0.0986 mole

0.0893 mole

176 grams of carbon dioxide, CO₂, is equal to how many moles of the substance.

about 44 moles

about 4 moles

about 1 mole

Convert 150 grams of methane ( $CH_4$ ) to moles. (Molar mass of $CH_4$ = 16 g/mol)

9.375 moles

10 moles

11.25 moles

12.5 moles

Convert 100 grams of sulfuric acid ( $H_2SO_4$ ) to moles. (Molar mass of $H_2SO_4$ = 98 g/mol)

0.98 moles

1.02 moles

1.5 moles

2 moles

How many moles are in 50 grams of carbon dioxide ( $CO_2$ )? (Molar mass of $CO_2$ = 44 g/mol)

0.5 moles

1.14 moles

1.36 moles

2.27 moles

If you were converting from grams Z to moles Z, which conversion factor would you use?

How many steps are in a gram to mole conversion?

10.

Which conversion factor should be used to solve the following, "How many moles in 28 grams of CO₂?"

1 mol = 22.4 L

1 mol = 44.0 g

1 mol = 6.02x10²³ atoms

more than one

11.

Convert 25 grams of sodium chloride (NaCl) to moles. (Molar mass of NaCl = 58.44 g/mol)

0.428 moles

0.500 moles

0.250 moles

0.300 moles

12.

What is the first step in converting grams to moles?

Find the molar mass of the substance

Divide the mass by the molar mass

Multiply the mass by Avogadro's number

Convert grams to kilograms

13.

Convert 75 grams of glucose (C6H12O6) to moles. (Molar mass of C6H12O6 = 180 g/mol)

0.417 moles

0.500 moles

0.600 moles

0.700 moles

14.

How many moles are in 200 grams of water (H2O)? (Molar mass of H2O = 18 g/mol)

11.11 moles

12.22 moles

10.00 moles

9.09 moles

15.

Which of the following is the correct formula to convert grams to moles?

moles = grams / molar mass

moles = grams * molar mass

moles = grams + molar mass

moles = grams - molar mass

16.

Convert 50 grams of ammonia (NH3) to moles. (Molar mass of NH3 = 17 g/mol)

2.94 moles

3.00 moles

2.50 moles

2.88 moles

17.

If you have 100 grams of a substance with a molar mass of 50 g/mol, how many moles do you have?

2 moles

1 mole

3 moles

4 moles

18.

Convert 120 grams of sulfur dioxide (SO2) to moles. (Molar mass of SO2 = 64 g/mol)

1.88 moles

1.75 moles

1.92 moles

1.50 moles

19.

What is the molar mass used for in the conversion from grams to moles?

To divide the mass to find moles

To multiply the mass to find moles

To add to the mass to find moles

To subtract from the mass to find moles

20.

Convert 80 grams of calcium carbonate (CaCO3) to moles. (Molar mass of CaCO3 = 100 g/mol)

0.80 moles

0.75 moles

0.85 moles

0.70 moles

21.

How many moles are in 150 grams of iron (Fe)? (Molar mass of Fe = 55.85 g/mol)

2.68 moles

2.50 moles

2.75 moles

2.80 moles

22.

Convert 90 grams of acetic acid (CH3COOH) to moles. (Molar mass of CH3COOH = 60 g/mol)

1.50 moles

1.60 moles

1.40 moles

1.70 moles

23.

What is the purpose of converting grams to moles in chemistry?

To determine the number of particles

To find the volume of the substance

To measure the temperature

To calculate the density

24.

Convert 200 grams of ethanol (C2H5OH) to moles. (Molar mass of C2H5OH = 46 g/mol)

4.35 moles

4.50 moles

4.25 moles

4.40 moles

25.

How many moles are in 250 grams of potassium chloride (KCl)? (Molar mass of KCl = 74.55 g/mol)

3.35 moles

3.50 moles

3.25 moles

3.40 moles

100 %

Converting Grams to Moles

Total questions: 25

Worksheet time: 25mins

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