Question

10. Write the molecular formulae for the following compounds (a)Copper (II) bromide (b) Aluminium nitrate (c) Calcium phosphate (d) Iron (III) sulphide (e) Mercury (II) chloride (f) Magnesium acetate ​

Answer 1

Answer:

The molecular formula is the expression of the number of atoms of each element in one molecule of a compound. The molecular formula definition is the formula showing the actual number of each atom in a molecule. When the molar mass value is known, the Molecular Formula is calculated by the empirical formula.

n = molar mass/mass of the empirical formula

(a) Copper (II) bromide

CuBr2

(b) Aluminium (III) nitrate

Al(NO3)3

(c) Calcium (II) phosphate

Ca3(PO4)2

(d) Iron (III) sulphide

Fe2S3

(e) Mercury (II) chloride

HgCl2

(f) Magnesium (II) acetate

Mg(CH3COO)

Explanation:

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Answer 2

i. Copper (II) bromide ii. Aluminium (III) nitrate iii. Calcium (II) phosphate iv. Iron (III) sulphide v. Mercury (II) chloride vi. Magnesium (II) acetate...