Average Atomic Mass Practice Problems

Average Atomic Mass Practice Problems

10th Grade

25 Qs

quiz-placeholder

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Calculating Average Atomic Mass

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20 Qs

Average Atomic Mass Practice Problems

Average Atomic Mass Practice Problems

Assessment

Quiz

Science

10th Grade

Hard

NGSS
MS-PS1-2, MS-PS1-1, HS-PS1-7

Standards-aligned

Created by

Lisa Thompson

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?

74.92 amu

24.97 amu

75.01 amu

74.51 amu

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

4.35% of all X atoms have a mass of 39.946 amu. 83.79% have a mass of 41.941 amu, 9.50% have a mass of 42.941 amu, and 2.36% have a mass of 43.939 amu. What is the average atomic mass of atom X?

41.97 amu

42.19 amu

10.43 amu

40.04 amu

Tags

NGSS.MS-PS1-2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Compute the average atomic mass for silicon:

27.977

28.09

28.976

The average mass cannot be determined from provided information.

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
How many protons does this element have?

32

33

34

no way to know

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the atomic mass of Sodium?

11

22.990

33.990

11.990

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the atomic mass of Gold?

79

196.97

79.97

275

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the atomic mass of "F"

9

18

17

19

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