# chemistry

posted by .

How many phosphorus atoms are in a 0.3352 g sample of Ca3(PO4)2 ?

• chemistry -

well since nobody helped you yet I can probably get you started.

this is the number of atoms in 1mol

you'd have to first use the grams and find the molecular weight of the compound. Ca3(PO4)2 = ?g

0.3352g ( 1mol Ca3(PO4)2 / mol weight of Ca3(PO4)2 ) = mol Ca3(PO4)2

then find out how many moles of P you have by multiplying the

(mol Ca3(PO4)2) (# mol P / 1mol Ca3(PO4)2) = # mol P

then use that and multiply that by avogadro's number to find the atoms of P you have..

#mol P (6.022*10^23 atom/ 1mol)= atoms of P

If I remember general chem correctly this should be it.

• chemistry -

That's it, thanks.

Remember Rog, that the number of P per mole of Calcium phosphate is 2 mole P per mole of calcium phosphate.

## Similar Questions

1. ### Chemistry

Consider the following chemical equation. Na3PO4(aq) + Ca(OH)2(aq) → Ca3(PO4)2(s) + NaOH(aq) How many grams of calcium hydroxide must react to give 2.81 g of Ca3(PO4)2?
2. ### Chemistry

Teeth and bones are composed, to a first approximation, of calcium phosphate, Ca3(PO4)2(s). The Ksp for this salt is 1.3*10^-32 at 25°C. Calculate the concentration of calcium ion in a saturated solution of Ca3(PO4)2.
3. ### Chemistry

# moles of Ca3(PO4)2 produced from 3100g Ca3(PO4)2
4. ### Chemistry

3Ca(NO3)2(aq)+2Na3PO4(aq)->Ca3(PO4)2(s)+6NaNO3(aq) (a) the grams of Ca3(PO4)2 that can be obtained from 126 mL of 0.750 M Ca(NO3)2 (b) the volume of 0.10 M Na3PO4 needed to react with 13 mL of 0.30 M Ca3(NO3)2 (c) the molarity (M) …
5. ### Chemistry

Teeth and bones are composed, to a first approximation, of calcium phosphate, Ca3(PO4)2(s). The Ksp for this salt is 1.3 10-32 at 25°C. Calculate the concentration of calcium ion in a saturated solution of Ca3(PO4)2. Please, help!
6. ### Science

a sample of Ca3(PO4)2 contains 3.1g phosphorus then the weight of Ca in the sample is ?
7. ### Chemistry

If 0.0142 M aqueous Cl- is produced stoichiometrically according to the balanced equation in a reaction solution with a total volume of 1480 mL, how many mol of solid Ca3(PO4)2 are produced?
8. ### chemistry

3CaCO3+2FePO4-->Ca3(PO4)2+Fe2(CO3)3 We start with 100g. of calcium carbonate and 45g. iron (III) phosphate. What is the maximum amount of Ca3(PO4)2 and Fe2(CO3)3 ?
9. ### Chemistry

58% Ca3 (PO4) 2 how many phosphorus are in 10 kg bones?
10. ### chemistry

H3PO4+3Ca(OH)2=Ca3(PO4)2=6H2O If 44.6g of Ca3(PO4)2 are formed in the above reaction, how many moles of H3PO4 must have been consumed?

More Similar Questions