Question

Atomic mass of silicon is 28g. How many silicon atoms are there in 1.00g of silicon?

Answer 1

Answer:

Also that 1 mole of Silicon weighs 28.0855 g. Therefore, 28.0855 g of Silicon contains 6.022×1023 of Silicon atoms.

Answer 2

The Standard Atomic Weight for Silicon is 28.0855 grams. The standard is based on the Avogadro's Constant which is 6.02214179 x 1023 mol-1. 1 mol of silicon will contains 6.02214179 x 1023 atoms of silicon.

$In \: 1 mol \: silicon (28.0855 grams) = 28.0855/28.0855 \times 6.02214179 \times 1023 = 6.02214179 \times 1023 \: atoms$

$In \: 1 gram \: silicon = 1/28.0855 \times 6.02214179 \times \: 1023$

$= 2.144217404 \times 1022 atoms$

#SP J2