Answer:
9.2 x 10⁻³ grams
Explanation:
1mole P = 6.02 x 10²³ atoms
So, no. moles in 1.8 x 10²⁰ atoms P = 1.8 x 10²⁰ / 6.02 x 10²³atoms/mole = 2.99 x 10⁻⁴ mole
Grams P = moles x formula weight of P = 2.99 x 10⁻⁴ mole x 30.9738 g/mole = 9.26 x 10⁻³ grams P
