Question

Guyzz, pls help, its URGENT

An ornament contains 20 g of Ag. Calculate the number of moles of silver (atomic mass of Ag = 108 u)

Answer 1

Answer:

Mass of Ag = 20g

Atomic mass of Ag = 108u

moles = weight given / atomic mass

moles = 20 / 108 = 0.185 moles ( approx)

Answer 2

Answer:

0.185

Explanation:

Atomic mass of silver=180u

moles of silver,

n=m

mass of silver(m) =20g

molar mass of silver m=108g

therefore, n=20/108

=0.185mle