Question

what is the nh Brickell formula of a compound that contains 3.609 g calcium and 6.384 g chlorine by mass

Answer 1

CaCl₂

Step-by-step explanation:

Given data:

Mass of calcium = 3.609 g

Mass of chlorine = 6.384 g

Empirical formula = ?

Solution:

Number of moles of calcium:

Number of moles of calcium = mass/ molar mass

Number of moles of calcium = 3.609 g/ 40 g/mol

Number of moles of calcium = 0.090 mol

Number of moles of chlorine:

Number of moles of chlorine = mass/ molar mass

Number of moles of chlorine = 6.384 g/ 35.5 g/mol

Number of moles of chlorine = 0.18 mol

Ca : Cl

0.090/0.090 : 0.18/ 0.090

1 : 2

Empirical formula:

CaCl₂