Question

2 moles of chlorine atoms are present in_____g of chlorine gas.

• A. 142
• B. 14.2
• C. 7.1
• D. 71

Answer 1

The correct option is D 71

1 mole of Cl atom is present in 35.5 g of $C{l}_2$ gas.
2 moles of Cl atom are present in $2\times 35.5$ = 71 g of $C{l}_2$ gas.