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Stoichiometry

Total questions: 17

Worksheet time: 1hrs 25mins

Name

Class

Date

2 KClO₃ → 2 KCl + 3 O₂
How many moles of oxygen are produced when 6.7 moles of KClO₃ decompose completely?

6.7 mol

1.0 mol

10.1 mol

4.5 mol

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

5.2 g

2.6 g

690 g

45 g

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

How many moles are in 19.82 g Mg?

1.226mol Mg

481.7mol Mg

1.000mol Mg

0.82 mol Mg

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

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

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?

8.8

0.99

1.0

1Mg + 2H₂O --> Mg(OH)₂ + H₂

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

62.0 L

0.12 L

2.77 L

1.15 L

How many particles are in a mole?

602

602 million

602 moles

6.02 x 10²³

10.

What is the mole ratio in the following reaction:
2CO + O₂→ 2CO₂

2:1:2

1:1:1

1:2:1

Have no clue what a mole ratios is!!

11.

1 mole of any gas at STP has a volume of ______________________.

22.4 liters

44.2 liters

6.02 x 10²³ liters

2.4 liters

12.

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

13.

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

4 moles

8 moles

16 moles

2 moles

14.

Balance this reaction: ____ RbNO₃ + ____ BeF₂ ----> ____ Be(NO₃)₂ + ____ RbF

1,1,1,1

1,2,1,1

2,1,1,2

2,1,2,1

15.

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

N₂ + 3H₂ --> 2NH₃

396 L

17.6 L

196 L

588 L

16.

How many liters of SO₂ will be produced from 55.0 L of O₂ at STP?

2H₂S + 3O₂ --> 2SO₂ + 2H₂O

55.0 Liters

36.7 Liters

18398 Liters

2.45 Liters

17.

In a chemical reaction, the mass of reactants ___.

is less than the mass of products

is greater than the mass of products

has no relationship to the mass of products

is equal to the mass of products

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Stoichiometry

Total questions: 17

Worksheet time: 1hrs 25mins

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