E17

[Lina Petrossian 1D]

E17: Which sample in each of the following pairs contains the greater number of moles of atoms? (a) 75 g of indium or
80 g of tellurium; (b) 15.0 g of P or 15.0 g of S; (c) 7.36 x 10^27 atoms of Ru or 7.36 x 10^27 atoms of Fe.

I believe I know how to solve a and b, but for c my answer is that they contain the same number of moles of atoms. Did anyone else get this answer?

[Alexandra Albers 1D]

This answer is correct, I believe. They have the same number of atoms and moles, so the number of moles for the answer is given by dividing the number of atoms present by Avogadro's constant.

[Lina Petrossian 1D]

Thank you!