Magnesium has three naturally occurring isotopes with masses of 23.99, 24.99, and 25.98 amu and natural abundances of 78.99%, 10

Question

3 years ago

5

.00%, and 11.01%, respectively. Calculate the atomic mass of magnesium. Express the atomic mass in atomic mass units to two decimal places.

1 answer:

evablogger [386] · Answer 1 · 2022-01-14T11:56:59+03:00

Answer:

The answer to your question is: 24.31 amu

Explanation:

Magnesium isotopes 1 mass 23.99 abundance 78.99%

2 mass 24.99 abundance 10.00%

3 mass 25.98 abundance 11.01 %

Atomic mass of magnesium = ((23.99x0.7899) + (24.99 x 0.10) + (25.98x0.1101)

Atomic mass of magnesium = 18.95 + 2.5 + 2.86

Atomic mass of magnesium = 24.31 amu