What is kinetic energy of 1 g of O₂ at 47⁰C

Options

(a) 1.24 ˣ 10² J
(b) 2.24 ˣ 10² J
(c) 1.24 ˣ 10³ J
(d) 3.24 ˣ 10² J

Correct Answer:

1.24 ˣ 10² J

Explanation:

K.E. = (3 / 2) nRT = (3 / 2) × (1 / 32) × 8.3 × 320 J = 1.24 × 10² J