P = 150 × 10^3 Па
N = 30 × 10^23
v^2 = 37,3 × 10^4
M = 40 × 10^-3 кг/моль
n - ?
V - ?
Eк - ?
1)P = n × m0 × v^2
M = m0 × Na => m0 = M/Na
P = n × (M/Na) × v^2 => n = (P × Na)/(M × v^2) = (150 × 10^3 × 6 × 10^23)/(40 × 10^-3 × 37,3 × 10 ^4) = 6 × 10^24 (м^-3)
2)n = N/V => V = N/n
V = 30 × 10^23/ 6 × 10^24 = 5 × 10^-1 = 0,5 (м^3)
3)P = 3/2 × n×Eк
Ек = (2 × P)/(3 × n )= 2 × 150 × 10^3 / 3 × 6 × 10^24 = 167 × 10^-22 (Дж)