Answer:
Number of moles = 0.3 mol
Explanation:
Given data:
Mass of PCl₃ = 35 g
Moles of PCl₃ = ?
Solution:
Formula:
Number of moles = mass/molar mass
Molar mass = 35.5×3 + 31
Molar mass = 137.5 g/mol
Number of moles = mass/molar mass
Number of moles = 35 g / 137.5 g/mol
Number of moles = 0.3 mol
