Eva K.

asked • 10/04/19

If you have 3.51 x 1049 N2 molecules, how many grams of N2 do you have?

Dante C.

In order to find the grams of the molecules given in the problem, You have to find the molar mass of N2 on the periodic table which is 28.0134 g/mol N2. The next step is to multiply the 3.51 x 1049 molecules of N2 by the mass of N2, 28.0134 g/mol, and the answer I obtained is 1.03 x 10^5 grams of N2.
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10/04/19

Nelson R.

You forgot to convert the number of molecules to moles. Is it 3.51 x 10to49 power molecules or 1049 times 3.51 the answer are very different. if its 10 to the 49th, I get 3.38 10 to the 25th moles which then needs to be multiplied by the 28 grams. That is an awful big number. I think there is a mistake in the problem.
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10/04/19

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