Stoich Review

How many grams are in 7.8 moles of NaCl?

• 476grams

• 460 grams

• 456 grams

• 462 grams

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

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

• 6
• 2
• 3
• 1

Tags

NGSS.HS-PS1-7

2 NaClO₃ (s) --> 2NaCl (s) +3 O₂ (g)  
12.00 moles of NaClO₃ will produce how many grams of O₂?

• 256 g of O₂
• 576 g of O₂
• 288 g O₂

Tags

NGSS.HS-PS1-7

What is the molar mass of AuCl₃?

• 96 g

• 130 g

• 232.5 g

• 303.5 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

• 6.87 mol

Using the following equation:

Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)

How many moles of water can be made from 6 moles H₂?

• 4 moles

• 6 moles

• 9 moles

• 2 moles

2 NaClO₃ (s) --> 2NaCl (s) +3 O₂ (g)

12.00 moles of NaClO₃ will produce how many grams of NaCl?

• 750 g of NaCl

• 1404 g of NaCl

• 12 g of NaCl

• 702 g of NaCl

Mg(s) + HCl(aq) --> MgCl₂(aq) + H₂(g)

How many grams of HCl are consumed by the reaction of 2.50 moles of magnesium? Balance this equation first

• 5.00 g

• 7.29

• 182 g

• 218 g

Mg(s) + HCl(aq) --> MgCl₂(aq) + H₂(g)

What is the mass in grams of H₂ gas when 4.0 moles of HCl is added to the reaction? Balance first

• 0.99 g

• 4.0 g

• 2.0 g

• 6.0 g