Chemistry Final Review Game

In a spacecraft, the carbon dioxide exhaled by astronauts can be removed by its reaction with Lithium hydroxide, LiOH, according to the following chemical equation. How many moles of lithium hydroxide are required to react with 20 mol CO2, the average amount exhaled by a person each day?
CO2+2LiOH--> Li2CO3+H2O

• 39 mol
• 40 mol
• 41 mol
• 42 mol

2Al + 3H₂SO₄ -> Al₂(SO₄)₃ + 3H₂
How many grams of aluminum sulfate would be formed if 250g H₂SO₄ completely reacted with aluminum?

• 0.85 g
• 290 g
• 450 g
• 870 g

Tags

NGSS.HS-PS1-7

How many grams of CO are needed to react with Fe₂O₃ to produce 558 g Fe? The equation for the reaction is: Fe₂O₃(s) + 3CO(g) → 3CO₂(g) + 2Fe(s)

• 280 g
• 5 g
• 55 g
• 420 g

Calculate the number of moles of water produced when 3.3 mol of Cu(NO₃)₂ are formed in the reaction. 3Cu(s) + 8HNO₃(aq) → 3Cu(NO₃)₂(s) + 2NO(g) + 4H₂O(l)

• 4.4 mol
• 4.5 mol
• 4.6 mol
• 4.7 mol

How many grams of Cu would be needed to react with 2.0 mol HNO₃?3Cu(s) + 8HNO₃(aq) → 3Cu(NO₃)₂(s) + 2NO(g) + 4H₂O(l)

• 45.6 g
• 46.6 g
• 47.6 g
• 48.6 g

When the limiting reactant in a chemical reaction is completely used, the

• the reaction stops
• the reaction speeds up
• excess reactants being used
• reaction slows down

Which is Avogadro's number?

• 6.02 X 10^23
• 6.02 X 10^24
• 6.02 X 10^25

The mass of one mole of a substance

• gram
• Molar mass
• calorie

Amount of substance

• Mole
• Chemistry

the conditions under which the volume of a gas is usually measured

• Volume
• Standard Pressure and Temperature (STP)