Chemistry, asked by robicakashif36, 19 days ago

Calculate no of atoms in 490g of KCIO3​

Answers

Answered by dhruv21605
0

Answer:

2KClO

3

+heat→2KCl+3O

2

2mol KClO

3

produce 3 mol O

2

The 0.384 g mass loss was due to the oxygen generated.

The amount of moles of oxygen generated can be calculated as: Molar mass O

2

= 32 g/mol

0.384 g O

2

= 0.384/32 = 0.012 mol O

2

generated

This came from the decomposition of 0.012 x 2/3 = 0.008 mol ofKClO

3

Molar mass KClO

3

= 122.55 g/mol

0.008 mol KClO

3

= 0.008 x 122.55 = 0.9804 g KClO

3

decomposed

% of original sample=

4.90

0.9804

×100=20%

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