SCH3U/4C Quantities in Chemical Reactions Review

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

What is the molar mass of C₆H₁₂O₆? Use 2 decimal places for each element's molar mass.

• 180.18

• 180.12

• 180.24

• 180.06

Balance the following reaction :
 
CaC₂(s)   +   H₂O(l)   -->   C₂H₂(g)   +   Ca(OH)₂(aq)

• 1,2,2,2
• 1,2,1,1
• 2,1,1,1
• 2,1,2,1

Tags

NGSS.HS-PS1-7

How many grams are in 1.00 mol of Oxygen gas, O₂

• 16.0 g

• 32.0 g

• 15.99 g

• 31.98 g

How many grams are in 7.8 moles of NaCl?

• 476grams

• 460 grams

• 452 grams

• 462 grams

Fe₂O₃ + 3H₂ → 2Fe + 3H₂O

About how many grams of H₂O will be produced from 150 grams of Fe₂O₃?

• 51 grams H₂O

• 2.8 grams H₂O

• 0.17 grams H₂O

• 9001 grams H₂O

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

How many atoms are in 13.5 grams of Beryllium?

• 1.5 atoms

• 9 atoms

• 4x10²³ atoms

• 9x10²³ atoms

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