Question

How many moles are 35 g of PCI3

Answer 1

Number of moles = 0.3 mol

Step-by-step 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