Mole to Mole Conversions Quiz

4Cr + 3O₂ ---> 2Cr₂O₃

How many moles of oxygen gas (O₂) are required to react with 4 moles of chromium (Cr)?

• 3 moles of O₂.

• 2 moles of O₂.

• 4 moles of O₂.

• 5 moles of O₂.

4Cr + 3O₂ ---> 2Cr₂O₃

How many moles of oxygen (O₂) are required to react with 8 moles of chromium (Cr)?

• 6 moles of O₂.

• 4 moles of O₂.

• 8 moles of O₂.

• 10 moles of O₂.

2Fe (s) + 3Cl₂ (g) ---> 2FeCl₃

How many moles of Iron (Fe) are required to react with 3 moles of chlorine gas (Cl₂)?

• 2 moles of Fe.

• 1 mole of Fe.

• 3 moles of Fe.

• 4 moles of Fe.

2NaClO₃ (aq) ---> 2NaCl (aq) + 3O₂ (g)

How many moles of sodium chloride (NaCl) are produced if 2 moles of sodium chlorate (NaClO₃) react?

• 2 moles of NaCl.

• 1 mole of NaCl.

• 3 moles of NaCl.

• No NaCl is produced.

Tags

NGSS.HS-PS1-7

2Na (s) + 2H₂O (l) ---> 2NaOH (aq) + H₂ (g)

How many moles of hydrogen (H₂) gas are produced if 4 moles of sodium (Na) react?

• 2 moles

• 1 mole

• 4 moles

• 8 moles

Tags

NGSS.MS-PS1-5

P₄ (s) + 5O₂ (g) ---> 2(P₂O₅)

How many moles of Phosphorus (P) are required to react with 10 moles of oxygen gas (O₂)?

• 4 moles

• 2 moles

• 5 moles

• 6 moles

Tags

NGSS.MS-PS1-5

CH₄ (g) + 2O₂ (g) → CO₂ (g) + 2H₂O (l)

If you have 3 moles of methane (CH₄), how many moles of oxygen (O₂) are required for complete combustion?

• 6 moles

• 3 moles

• 9 moles

• 12 moles

Tags

NGSS.HS-PS1-7

CaCO₃ (s) → CaO (s) + CO₂ (g)

If you start with 5 moles of calcium carbonate (CaCO₃), how many moles of calcium oxide (CaO) will be produced?

• 5 moles

• 4 moles

• 6 moles

• 10 moles

Tags

NGSS.HS-PS1-7

N₂ + 3H₂ → 2NH₃

If you have 2 moles of nitrogen (N₂), how many moles of ammonia (NH₃) can be produced?

• 1 mole

• 2 moles

• 3 moles

• 4 moles

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4 FeCr₂O₇ + 8 K₂CO₃ + 1 O₂ --->  2 Fe₂O₃ + 8 K₂CrO₄ + 8 CO₂

How many moles of FeCr₂O₇ are required to produce 44 moles of CO₂?

• 20 mol of FeCr₂O₇

• 80 mol of FeCr₂O₇

• 22 mol of FeCr₂O₇

• 88 mol FeCr₂O₇

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7