End of Class 3/4

How many liters are in a mole?

• 6.022x10^23
• 1
• Molar Mass
• 22.4

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

What is the mole ratio of H₂O to H₃PO₄ in the following chemical equation?   P₄O₁₀ + 6 H₂O --> 4 H₃PO₄ 

• 6:4
• 4:6
• 1:3
• 3:1

How many liters of NH₃ are needed to react completely with 30.0L of NO?
4NH₃+6NO --> 5N₂ + 6H₂O

• 5.0 L
• 20.0 L
• 7.5 L
• 120.0 L

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

• 4 moles Fe
• 6 moles Fe
• 9 moles Fe
• 2 moles Fe

What is the volume of gas produced at STP for 1 mole of gas?

• 22.4 liters

• 24.0 liters

• 20.0 liters

• 18.5 liters

What is the molar mass of aluminum (Al)?

• 24.31 g/mol

• 26.98 g/mol

• 28.09 g/mol

• 30.07 g/mol

N₂ +  3H₂ → 2NH₃ 
How many moles of hydrogen are needed to react with 2 moles of nitrogen?

• 6
• 2
• 3
• 1

When converting from moles of one substance to moles of another, the ____________ is needed to calculate the conversion.

• periodic table

• unbalanced equation

• balanced equation

• molar mass

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