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Stoichiometry Moles

Authored by Lisa Thompson

Science

10th Grade

NGSS covered

Stoichiometry Moles
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the total number of moles contained in 115 g of C2H5OH?

0

1.5

3.0

2.5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the total mass in grams of 0.75 mole of SO2?

16 g

24 g

32 g

48 g

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Find the mass of 5 moles of water.

18.02 g

36.04 g

90.1 g

25.0g

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

KNO3 --> KNO2 + O2
What coefficients are needed to balance the reaction?

2, 2, 1

2, 3, 2

1, 2, 2

1, 3, 1

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many moles are present in 25 grams of NaCl?

0.427 moles

0.150 moles

0.625 moles

0.312 moles

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Convert 50 grams of Fe2O3 to moles.

0.625

0.313

0.750

0.125

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If 0.5 moles of Al react with excess HCl, how many grams of AlCl3 are produced in the reaction 2Al + 6HCl -> 2AlCl3 + 3H2?

72.89 grams

45.32 grams

60.14 grams

66.67 grams

Tags

NGSS.HS-PS1-7

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