Question

Make the formula & Calcuate molecuar mass of the following:-
1. Calcium phosphate
2. Aluminium oxide
3. Zinc hydrogen
4. magnesium bicrbonate
5. Sodium phosphate

atomic mass :-
Calcium - 40u
phosphorous - 32u
Aluminium - 27u
oxygen - 16u
Zinc - 65u
hydrogen - 1u
Magnesium - 24u
crbon - 12u
Sodium - 23u ​

Answer 1

Answer:

1.Mass of Ca3(PO4)2

=(3× atomic mass of Ca)+(2× atomic mass of phosphorus)+(8×atomic mass of oxygen) =3×40+2×31+8×16

=310

pm2. Mass of Al₂O₃

=27×2+16×3

=102

3. Zinc hydrogen is not any compound.

4. Mass of C2H2MgO6

=12×2+1×2+24×1+16×6

=146

5. Mass of Na3PO4

=23×3+32×1+16×4

=165