Stoichemistry Part 2

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

• a. 5.2 g

• b. 2.6 g

• c. 690 g

• d. 45 g

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

• a. 0.85 g

• b. 290 g

• c. 450 g

• d. 870 g

How many moles are in 19.82 g Mg? 

• a. 1.226mol Mg

• b. 481.7mol Mg

• c. 1.000mol Mg

• d.  0.82 mol Mg

2CO  +  O₂  −-> 2CO₂ How many liters of carbon dioxide are produced from 10L of carbon monoxide?

• a. 10

• b. 20

• c. 1

• d. 5

2Al + 6HCl --> 2AlCl₃ + 3H₂

Aluminium reacts with hydrochloric acid. How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP?

• a. 13

• b. 8.8

• c. 0.99

• d. 1.0

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

• a. 5.0 L

• b. 20.0 L

• c. 7.5 L

• d. 120.0 L

1Mg + 2H₂O --> Mg(OH)₂ + H₂

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

• a. 62.0 L

• b. 0.12 L

• c. 2.77 L

• d. 1.15 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? 

• a. 4 moles Fe

• b. 6 moles Fe

• c. 9 moles Fe

• d. 2 moles Fe

 2H₂   +   O₂  →  2H₂O How many moles of water can be produced if 8 moles H₂ are used?

• a. 4 moles

• b. 8 moles

• c. 16 moles

• d. 2 moles

How many liters of N₂, at STP, will react with 53.0 g H₂ to form ammonia?

N₂ + 3H₂ --> 2NH₃

• a. 396 L

• b. 17.6 L

• c. 196 L

• d. 588 L