Molar Mass of Na2HPO4

How to work out the molar mass of Na2HPO4

1. Count the atoms of each element in Na2HPO4: 2 Na, 1 H, 1 P and 4 O.
2. Multiply each count by the element's atomic weight: 2 × 22.990 = 45.980; 1 × 1.008 = 1.008; 1 × 30.974 = 30.974; 4 × 15.999 = 63.996.
3. Add the results: 45.980 + 1.008 + 30.974 + 63.996 = 141.958 g/mol.

Frequently asked questions

What is the molar mass of Na2HPO4?

The molar mass of disodium hydrogen phosphate (Na2HPO4) is 141.958 g/mol, so one mole of it weighs 141.958 grams.

How many moles are in 100 grams of Na2HPO4?

100 g ÷ 141.958 g/mol = 0.704 mol.

Which element makes up most of the mass of Na2HPO4?

O, at 45.08% of the mass.