Free Printable Stoichiometry_Progress Assessment

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Stoichiometry_Progress Assessment

Total questions: 20

Worksheet time: 2hrs 40mins

Name

Class

Date

the molar mass of O₂ is

32 g

32 g/mol

32 amu

32 mol

what is the molar mass of C₆H₁₂O₆

154.0 g/mol

178.0 g/mol

180.0 g/mol

192.0 g/mol

The number 6.02 x 10²³ is called...

Obama's number

Bohr's number

Trump's number

Avogadro's number

How many grams are in 88.1 moles of Magnesium?

2114.4

0.27

1470.3

How many moles are in 3.01 x 10²² atoms of magnesium?

0.050 moles

1.81 x 10⁴⁶ moles

5.00 x 10²¹ moles

5.00 moles

Which compound has the smallest molar mass?

CO₂

H₂O

H₂O₂

How many molecules are in 9.44 moles of AlCl₃?

5.68 molec AlCl₃

5.68x10²⁴molec AlCl₃

0.705 molec AlCl₃

1.25x10²³molec AlCl₃

How many grams are in 11.9mol of chromium?

0.229g

4.37g

52.0g

619g

Find the molar mass of:
Pb(NO₃)₂

241 g/mol

207 g/mol

301 g/mol

331 g/mol

10.

When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced

charge

subscript

random number

coefficient

11.

How many atoms of aluminum are on each side of the following equation:

4Al + 3O₂--> 2Al₂O₃

12.

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

13.

Cl₂ + 2KBr → Br₂ + 2KCl

How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?

749 g

223 g

479 g

814 g

14.

What volume of hydrogen gas will be produced at STP by the reaction of 67.3 g of magnesium with excess water according to the following reaction?

Mg + 2H₂O --> Mg(OH)₂ + H₂

62L

65L

31L

124L

15.

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

16.

The reaction below is an example of?

AgNO₃ + NaCl → AgCl + NaNO₃

Single Replacement

Double Replacement

Decomposition

Combustion

17.

H₂ + F₂ → 2 HF

In the reaction represented above, what mass of HF is produced by the reaction of 3.0 × 10²³ molecules of H₂ with excess F₂?

4.0 g

10. g

20. g

40. g

18.

2Al + 6HCl --> 2AlCl₃ + 3H₂

How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP?

8.8

0.99

1.0

19.

Which conversion factor should be used for the following question " How many molecules are there in 4.00 moles of glucose, C₆H₁₂O₆?

1 mole = 78.12 g

1 mole = 22.4 L

1 mol = 6.02x 10²³ particles

more than one

20.

What is the volume of 2 moles of gas at STP?

22.4 L

44.8 L

11.2 L

2 L

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Stoichiometry_Progress Assessment

Total questions: 20

Worksheet time: 2hrs 40mins

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