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2 years ago

Need help calculating atomic mass (see pohoto for more info)

Chemistry

2 answers:

Mazyrski [523]2 years ago

8 0

Answer:

28.1

Explanation:

The correct answer is 28.1

<h2>BRAINILIEST PLEASE </h2>

polet [3.4K]2 years ago

5 0

Answer:

28.1

Explanation:

Divide the percentage abundances by 100:

92.2% ÷ 100 = 0.922

4.7% ÷ 100 = 0.047

3.1% ÷ 100 = 0.031

multiply them by their corresponding mass number:

0.922×28 = 25.816

0.047×29 = 1.363

0.031×30 = 0.93

add them all together to get your final answer:

25.816 + 1.363 + 0.93 = 28.109

to one decimal place:

28.1

I hope that helps!!!

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