120 grams of HF are needed to react with 3.0 moles of Sn
Explanation:
The balanced chemical equation is :
According to stoichiometry:
1 mole of reacts with 2 moles of HF
Thus 3.0 moles of Sn will react = moles of HF
Mass of
Thus 120 grams of HF are needed to react with 3.0 moles of Sn