28. An inorganic salt gave the following percentage composition: Na = 29.11, S = 40.51 and O = 30.38 Calculate the empirical formula and molecular formula of the salt. Given that the molecular mass of the salt is 158g

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Q. An inorganic salt given the following percentage composition:

N a = 29.11, S = 40.51

and

O = 30.38

. Determine the empirical formula of the salt.

Q. A crystalline hydrated salt on being rendered anhydrous loses 45.6% of its weight.
The percentage composition of the anhydrous salt is:

A l = 10.5 %, K = 15.1 %, S = 24.8 %

and oxygen

= 49.6 %

[Molar mass of

A l = 27, K = 39, S = 32

].

What is the empirical formula of the salt?

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.

An organisc compound, whose vapour density is 45, has the following percentage composition,
H = 2.22 % O = 71 . 19% and remaining carbon.

Calculate:
(a) its empirical formula, (b) its molecular formula.

Q. A crystalline hydrated salt on being rendered anhydrous, loses 45.6% of its weight. The percentage composition of anhydrous salt is : Al = 10.5%, K = 15.1%, S = 24.8% and I = 49.6%. Find the empirical formula of the salt.

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