Question

calculate the percentage of elements present in compound K2So4
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Answer 1

Answer:

Explanation:

o find, the percentage of elements present in compound .

The molecular weight of

= 2 × 39 + 32 + 16 × 4

= 78 + 32 + 64

= 174

We know that,

Mass percent (%) =

The percentage of K =

= 44.8 %

The percentage of S =

= 18.391 %

The percentage of O =

= 36.781 %

∴ The percentage of K = 44.8 %, The percentage of S = 18.391 % and

The percentage of O = 36.781 %

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Answer 2

Answer:

K =

$2 \div 7 \times 100 = 28.5\%$

S=

$1 \div 7 \times 100 = 14.2\%$

O =

$4 \div 7 \times 100 = 57.1\%$