Molar Mass of Calcium phosphate
Ca3(PO4)2 — 310.174 g/mol, worked out element by element.
Molar mass of Calcium phosphate, Ca₃(PO₄)₂
310.174 g/mol
Molecular weight 310.174 · 13 atoms per formula unit
Also known as: ca3(po4)2, tricalcium phosphate.
The mineral phase of bone and teeth, and the raw material for phosphate fertiliser.
How 310.174 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Oxygen | 8 | 15.999 | 127.992 | 41.26% |
| Calcium | 3 | 40.078 | 120.234 | 38.76% |
| Phosphorus | 2 | 30.974 | 61.948 | 19.97% |
| Total | 13 | 310.174 | 100% |
M = 8 × 15.999 + 3 × 40.078 + 2 × 30.974 = 310.174 g/mol
Grams to moles for Calcium phosphate
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0032 mol | 1.942 × 10^21 |
| 10 g | 0.0322 mol | 1.942 × 10^22 |
| 25 g | 0.0806 mol | 4.854 × 10^22 |
| 50 g | 0.1612 mol | 9.708 × 10^22 |
| 100 g | 0.3224 mol | 1.942 × 10^23 |
| 250 g | 0.8060 mol | 4.854 × 10^23 |
| 310.174 g | 1 mol | 6.022 × 10^23 |
For any other amount, use the molar mass calculator, or the molarity calculator to make up a solution of a given concentration.
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Frequently Asked Questions
What is the molar mass of Calcium phosphate?
The molar mass of Calcium phosphate (Ca3(PO4)2) is 310.174 g/mol. That is the sum of the standard atomic weights of all 13 atoms in one formula unit: 8 × 15.999 + 3 × 40.078 + 2 × 30.974 = 310.174.
What is the molecular weight of Calcium phosphate?
310.174 — the same number as the molar mass, but as a dimensionless ratio rather than in g/mol. The two terms describe the same arithmetic, so a molecular weight of 310.17 and a molar mass of 310.17 g/mol are the same answer.
How many moles are in 100 g of Calcium phosphate?
100 ÷ 310.174 = 0.3224 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Calcium phosphate?
By mass, Calcium phosphate is 41.26% oxygen, 38.76% calcium, 19.97% phosphorus. Each element's share is its total mass in the formula divided by 310.174.
How many atoms are in one formula unit of Calcium phosphate?
13: 8 oxygen, 3 calcium, 2 phosphorus. One mole contains 6.02214076 × 10²³ formula units, so a mole of Calcium phosphate contains 13 × 6.022 × 10²³ atoms in total.