3 years ago

Can you help me do this

Chemistry

1 answer:

Vlad1618 [11]3 years ago

5 0

Answer:

24.4 amu

Explanation:

1. Multiply the mass numbers by their percentages using the rules of significant figures:

Isotope 1: 24(.786) = 18.864 ⇒ 18.9

Isotope 2: 25(.101) = 2.525 ⇒ 2.53

Isotope 3: 26(.113) = 2.938 ⇒ 2.94

2. Find the sum of the products calculated using the rules of significant figures:

18.9 + 2.53 + 2.94 = 24.37 ⇒ 24.4

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