Advertisements
Advertisements
प्रश्न
Calculate the percentage of phosphorus in Calcium phosphate Ca3(PO4)2
उत्तर
Molecular mass of Ca3(PO4)2 = 310
∴ Percentage of phosphorus in Calcium phosphate = `62/310 xx 100`
= 20%
APPEARS IN
संबंधित प्रश्न
Commercial sodium hydroxide weighing 30 g has some sodium chloride in it. The mixture on dissolving in water and subsequent treatment with excess silver nitrate solution formed a precipitate weighing 14.3 g. What is the percentage of sodium chloride in the commercial sample of sodium hydroxide? The equation for the reaction is
\[\ce{NaCl + AgNO3 -> AgCl + NaNO3}\]
[Relative molecular mass of NaCl = 58, AgCI = 143]
Calculate the percentage of nitrogen and oxygen in ammonium nitrate. [Relative molecular mass of ammonium nitrate is 80, H = 1, N = 14, O = 16].
Calculate the percentage of phosphorus in calcium hydrogen phosphate Ca(H2PO4)2 .
Calculate the percentage of phosphorus in calcium phosphate Ca3(PO4)2.
An acid of phosphorus has the following percentage composition; Phosphorus = 38.27%; hydrogen = 2.47%; oxygen = 59.26%. Find the empirical formula of the acid and its molecular formula, given that its relative molecular mass is 162.
A sample of ammonium nitrate when heated yields 8.96 litres of steam (measure at STP).
\[\ce{NH4NO3 -> N2O + 2H2O}\]
- What volume of dinitrogen oxide is produced at the same time as 8.96 litres of steam?
- What mass of ammonium nitrate should be heated to produce 8.96 litres of steam? (Relative molecular mass of ammonium nitrate is 80).
- Determine the percentage of oxygen in ammonium nitrate (O = 16).
Calculate the percentage of sodium in sodium aluminium fluoride (Na3AlF6) correct to the nearest whole number. (F = 19; Na = 23; Al = 27)
Calculate the percentage composition of calcium nitrate [Ca = 40 , Cl = 35.5 , N = 14 , O = 16]
60 g of a compound on analysis gave 24 g C, 4 g H and 32 g O. The empirical formula of the compound is ______.
State the term for the following:
The formula which represents the simplest ratio between the atoms of elements present in a compound.
