The atomic mass of iron is 55.85, and oxygen is 16.0. What is the mass of 6.02 * 1023 molecules of Fe2O3? 71.85 g 143.7 g 159.7 g 199.55 g 215.55 g

Question

Zane Wu

Chemistry

9 April, 09:21

The atomic mass of iron is 55.85, and oxygen is 16.0. What is the mass of 6.02 * 1023 molecules of Fe2O3? 71.85 g 143.7 g 159.7 g 199.55 g 215.55 g

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Answers (1)

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Leah Wells · Answer 1

The atomic mass of iron is 55.85, and oxygen is 16.0. What is the mass of 6.02 * 1023 molecules of Fe2O3?

Since there are 2 molecules for Iron (Fe) and 3 for Oxygen (O), then we can do the equation.

= 55.85 * 2 + 3 * 16

= 159.7

So the correct answer is 159.7 g.