Solution:
Step 1: Calculate the molar mass of HF and SnF₂.
For HF
molar mass = (1.008 g/mol × 1) + (19.00 g/mol × 1)
molar mass = 20.008 g/mol
For SnF₂
molar mass = (118.7 g/mol × 1) + (19.00 g/mol × 2)
molar mass = 156.7 g/mol
Step 2: Determine the mole ratio needed.
mole ratio = 2 mol HF : 1 mol SnF₂
Step 3: Calculate the mass of SnF₂ produced by using the mole ratio.
[tex]\text{mass of SnF₂ = 55.0 g HF} × \frac{\text{1 mol HF}}{\text{20.008 g HF}} × \frac{\text{1 mol SnF₂}}{\text{2 mol HF}} × \frac{\text{156.7 g SnF₂}}{\text{1 mol SnF₂}}[/tex]
[tex]\boxed{\text{mass of SnF₂ = 215.4 g}}[/tex]
