What is the mass in grams of 150 x 10^12 iron atoms, each having a mass of 56 u?

Question

Chemistry

Colton Harding

13 January, 15:42

What is the mass in grams of 150 x 10^12 iron atoms, each having a mass of 56 u?

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Answers (2)

Know the Answer?

Roy · Answer 1

The answer is 13.9 nanograms.

Shayla Cole · Answer 2

If we divide the number of Fe atoms (150x10^12) by Avogadro's Number (6.022x10^23) we get the number of moles of Iron. This value comes out to be 2.49x10^-10. If we multiply the number of moles by the molar mass of iron (55.86 grams) than we get a value that comes out to be 1.39x10^-8 grams or 13.9 nanograms.