Question

(i) Write the chemical formula of ammonium phosphate.
(ii) Find the formula unit mass of CaSO4 .2H2O

Answer 1

Answer:

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Answer 2

Answer:

1. The formula of Ammonium Phosphate is (NH4)3 PO4.

2.Formula unit mass of CaSO4. 2H2O

= (Number Calcium atoms x atomic mass of Calcium) + (Number Sulphur atoms x atomic mass of sulphur) + (Number Oxygen atoms x atomic mass of Oxygen) + (Number Water molecules x Molecular mass of water molecule)

=(1×40)+(1×32)+(4×16)+(2×18)

=40+32+64+36

=172

Formula unit mass of gypsum = 172

I hope it will help you.