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worty [1.4K]
2 years ago
14

Calculate the percentage of zinc I zncl2

Chemistry
1 answer:
Murrr4er [49]2 years ago
4 0

Answer:

47.8 %

Explanation:

Ar of Zn = 65

Mr of ZnCl2 = 65 + (2 * 35.5)

= 65+ 71

= 136

Percentage Composition

= ( Ar of element × No of atom in formula ) / Mr of compound * 100 %

% composition of Zn = ( 65*1 )/ 136 × 100 %

= 47.7941...

= 47.8 % ( 3 s.f )

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Answer:

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Explanation:

NB: kindly check the diagram of the chemical compound in the attached picture.

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A certain isotope has 53 protons 78 neutrons and 53 electrons. What is its atomic number? What is the mass number of this atom?
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Answer:

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