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

mass of Zn = 77.0 g

Step-by-step 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 =
`(Mass)/(AM) = (82.1 g)/(69.723 amu) = 1.178 mole`

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