1.2 Mass Spectroscopy

Multiple Choice

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

Multiple Choice

An element with 4.35% have a mass of 49.9461 amu, 83.79% have amass of 51.9405 amu, 9.50% have a mass of 52.9407 amu, and 2.36% have a mass of 53.9389amu.

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

Multiple Choice

Calculate the average atomic mass from the mass spec.

• 85.56 amu

• 85.75 amu

• 86.44 amu

• 86.74

Multiple Choice

What element has the following mass spec data?

• Sulfur

• Nitrogen

• Oxygen

• Carbon

Multiple Choice

What element has the following mass spec data?

• Rubidium

• Chlorine

• Bromine

• Mercury