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sumerle25 sumerle25
  • 14-02-2017
  • Chemistry
Answered

The astronaut then measures the abundance of magnesium on the new planet, obtaining the following results:

Isotope Abundance

(%) Mass

(amu)

24Mg 78.99 23.99

25Mg

10.00 24.99

26Mg 11.01 25.98

What is the atomic mass of magnesium for this planet?

Verified Answer :

Hellopotter2354 Hellopotter2354
  • 14-02-2017

Divide each isotope mass by 100 and times it by the percentage of that isotope. Add them all together and there's your answer.

For example:

If you had 79% of Mg-24 then it would be (24/100) × 79.

Etc

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