Stoichiometry Concepts Practice

N₂ +  3H₂ −->  2NH₃ 
How many moles of ammonia are produced when 3 moles of nitrogen react with hydrogen?

• 6 moles ammonia

• 1.5 moles ammonia

• 9 moles ammonia

• 9 moles hydrogen

Tags

NGSS.HS-PS1-7

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from  6 moles H₂? 

• 4 moles Fe

• 6 moles Fe

• 9 moles Fe

• 2 moles Fe

Tags

NGSS.HS-PS1-7

What volume of hydrogen will be produced at STP by the reaction 67.3 g of magnesium?

• 67.3 dm3 

• 0.12 dm3 

• 2.77 dm3 

• 1.15 dm3 

The mass of one mole of substance is called...

• molecular mass

• mole constant

• molar mass

• atomic weight

Tags

NGSS.HS-PS1-7

2H₂  +   O₂  →  2H₂O
How many moles of oxygen are consumed if 8 moles H₂ are used?

• 2

• 4

• 6

• 8

Tags

NGSS.MS-PS1-5

2 KClO₃ → 2 KCl + 3 O₂
How many moles of oxygen are produced when 6.7 moles of KClO₃ decompose completely?

• 6.7 mol

• 1.0 mol

• 10.1 mol

• 4.5 mol

Tags

NGSS.HS-PS1-7

2Na + 2H₂O → 2NaOH+ H₂
How many grams of hydrogen are produced if 120 g of Na are available?

• 5.2 g

• 2.6 g

• 690 g

• 45 g

CH₄ + 2 O₂ → CO₂ + 2 H₂O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH₄?

• 13.7 mol

• 2.75 mol

• 6.11 mol

• 6.85 mol

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from 3 moles of Fe₂O₃?

• 6 moles Fe

• 4 moles Fe

• 2 moles Fe

• 1 moles Fe

Tags

NGSS.HS-PS1-7

4 Al + 3 O₂ –> 2 Al₂O₃ How much aluminum would be needed to completely react with 45 grams of O₂?

• 1.05 moles

• 3.75 moles

• 0.875 grams

• 1.875 moles

Tags

NGSS.HS-PS1-7