Question

How many grams of Zn are there in a sample of Zn that contains the same number of moles as a 82.1 gram sample of Ga? grams of Zn

Answer 1

Answer:

mass of Zn = 77.0 g

Explanation:

In the sample you have the same moles of Zn and Ga.

The formula for moles is:

$Mass = moles*MM$

Where MM: Molar Mass or Atomic Mass for elements

AM(Ga) = 69.723 amu

AM(Zn) = 65.38 amu

moles of Ga = $\frac{Mass}{AM} = \frac{82.1 g}{69.723 amu} = 1.178 mole$

mass of Zn = $moles*AM=1.178 mole*65.38amu = 77.0 g$