Molar mass of magnesium chloride hexahydrate (MgCl2·6H2O)

The molar mass of magnesium chloride hexahydrate (MgCl2·6H2O) is 203.295 g/mol.

Step-by-step calculation

ElementAtomsAtomic massSubtotal
Magnesium × 1 24.305 = 24.305
Chlorine × 2 35.45 = 70.9
Hydrogen × 12 1.008 = 12.096
Oxygen × 6 15.999 = 95.994
Total203.295 g/mol

Percent composition by element

  • Magnesium 11.96%
  • Chlorine 34.88%
  • Hydrogen 5.95%
  • Oxygen 47.22%

Try another formula

H2O NaCl CO2 C6H12O6 H2SO4 Ca(OH)2 CuSO4·5H2O C8H10N4O2

Could not read that formula

Related compounds

Mg(OH)2 Magnesium hydroxide HClO4 Perchloric acid HClO Hypochlorous acid MgSO4·7H2O Magnesium sulfate heptahydrate HClO3 Chloric acid CoCl2·6H2O Cobalt(II) chloride hexahydrate

FAQ

What is the molar mass of MgCl2·6H2O?

The molar mass of magnesium chloride hexahydrate (MgCl2·6H2O) is 203.295 g/mol.

How do you calculate the molar mass of MgCl2·6H2O?

Multiply the atomic mass of each element by the number of its atoms in MgCl2·6H2O, then add the results: 1 × 24.305 (Mg) + 2 × 35.45 (Cl) + 12 × 1.008 (H) + 6 × 15.999 (O) = 203.295 g/mol.

What percentage of MgCl2·6H2O is Oxygen?

Oxygen makes up 47.22% of the mass of magnesium chloride hexahydrate (MgCl2·6H2O).