How many moles is 1.22 grams of flourine gas f2)

To convert grams to moles:
You have 1.22 grams of Fluorine gas (F₂)
F₂ = 18.998 g/mol F₂ × 2 (subscript of F₂) = 37.996 g/mol F₂
Divide 37.996 g/mol F₂ by 1.22 g F₂ so:
=
0.032 moles of F₂

Answer:

5.6⋅10−^19  j

do you need the explaination?

Answer the molar mass of magnesium is 24.305g/mol.