Question

Mohon bantuannya 3 ......

Answer 1

Air
V = 6×10^-4 m³
ρ = 10³ kg/m³
Mr = 18 gr/mol
Na = 6,02×10²³ molekul/mol

Massa
ρ = m / V
m = ρ V
m = (10³ kg/m³) (6×10^-4 m³)
m = 0,6 kg = 600 gr

Jumlah mol
n = m / Mr
n = (600 gr) / (18 gr/mol)
n = 33⅓ mol

Jumlah molekul
N = n Na
N = (33⅓ mol) (6,02×10²³ molekul/mol)
N = 2×10^25 molekul ←