A 1 L Container Contains O₂ Gas at STP $\times$ 10 ^-10 M, the Number of Collisions Per Second Is

Multiple Choice

A 1 L container contains O₂ gas at STP. If the diameter of the O₂ molecule is 3.75 $\times$ 10 ^-10 m, the number of collisions per second is

A) 6.7 $\times$ 10⁹
B) 6.1 $\times$ 10⁹
C) 8.1 $\times$ 10⁹
D) 7.1 $\times$ 10⁹
E) 1.0 $\times$ 10¹⁰