Atomic Structure Day 4 - Calculating Atomic Mass

Multiple Choice

Compute the average atomic mass for silicon:

• 27.977
• 28.09
• 28.976
• The average mass cannot be determined from provided information.

Multiple Choice

Calculate the average atomic mass of silver.

• 106.38649amu
• 111.91896amu
• 107.8677amu
• 121

Multiple Choice

An element has 4 isotopes:

4.35% have a mass of 49.9461 amu

83.79% have a mass of 51.9405 amu

9.50% have a mass of 52.9407 amu,

2.36% have a mass of 53.9389amu.

What is the average atomic mass?

• 51.99 amu
• 52.19 amu
• 53.45 amu
• 17.33 amu