Determine the Number of Ammonia Molecules in 4

Determine the number of ammonia molecules in 4.85 g of ammonia.(N_A = 6.022 × 10²³ mol⁻¹)

A) 2.92 × 10²³ molecules
B) 4.73 × 10⁻²⁵ molecules
C) 1.24 × 10²³ molecules
D) 5.83 × 10⁻²⁴ molecules
E) 1.71 × 10²³ molecules