Suppose That in a Known Volume of He There Are

Suppose that in a known volume of He there are 6.022 × 10²³ molecules (4.00 g) present at 1.00 atm and 0°C. How many molecules and how many grams of Cl₂ are there under the same conditions?

A) 6.022 × 10²³ molecules and 35.45 g
B) 1.00 molecules and 4.00 g
C) 6.022 × 10²³ molecules and 70.90 g
D) 2(6.022 × 10²³) molecules and 35.45 g
E) 8(6.022 × 10²³) molecules and 70.90 g