Question

What is the number of atoms in 8.5 g PH3 ?

Answer 1

Answer:

2.4088×10^24

Explanation:

The molar mass of NH3 is equals to 17 gram.

Moles of NH3 in 8.5 gm =8.5/17=0.5

thus molecules in half mole NH3 is 6.022×10^23×0.5

and atoms in half mole NH3=0.5× 6.022×10^23×4

now calculate it