Question

Which of the following would have the greatest mass?

15.0 moles of N
20.0 moles of H
5.0 moles of Zn
1.0 moles of Pb

Answer 1

5.0 moles of Zn

when you convert all of them into grams you’ll find that Zn has the greatest mass

Answer 2

Answer:

5.0 moles of Zn.

Explanation:

From the molar masses we get 15 moles of N  =  15* 14 =   210 g.

20 moles of H = 20.16 g,

5 moles of Zn = 5*65.38 = 326.9 g.

1 mole of lead = 207.2 g.