In a period of 1.0 s, 5.0 × 1023 nitrogen molecules strike a wall of area 8.0 cm2. If the molecules move at 30?

In a period of 1.0 s, 5.0 × 1023 nitrogen molecules strike a wall of area 8.0 cm2. If the molecules move at 300 m/s and strike the wall head on in a perfectly elastic collision, find the pressure exerted on the wall. (The mass of one N2 molecule is 4.68 × 10–26 kg.)