Tolong bantu jawab ya

Dik:
V = 12 L = 12 × 10^-3 m^3
T = 27°C = 300 K
P = 1 atm = 10^5 N/m^2
R = 8,314 J/mol K
Na = 6,02 × 10^23 partikel/mol

Dit:
N = ?

Jawab:

P × V = n × R × T
10^5 N/m^2 × 12 × 10^-3 m^3 = n × 8,314 J/mol K × 300 K
n = 1200 ÷ 2494,2
n = 0,48 mol

N = n × Na
N = 0,48 mol × (6,02 × 10^23) partikel/mol

N = 2,9 × 10^23 partikel (B)