A 11863 G of SrCl₂ ∙ 6H₂O Contains ____ Molecules of of Strontium

A 118.63 g of SrCl₂ ∙ 6H₂O contains ____ molecules of strontium nitrate

A) 2.680 × 10²³
B) 1.346 × 10²⁴
C) 5.540 × 10²³
D) 6.224 × 10 ^{− 24}