Question

помогите 1 и 2!!!!!!!!!!!!!!!!

Answer 1

1. n (PH3) = V / Vm = 17,94 : 22,4 = 0.8 моль
m (PH3) = n * M = 0.8 × (31 + 3 * 1) = 27,2 г
2. n (CH4) = N : NА = 21,07 * 10^25 : (6 * 10^23) = 351,17 моль
V (CH4) = n * Vm = 351,17 * 22,4 = 7866,2 л