Question

Calculate the percentage of Ca in 80gm CaCO3
А. 60%
B.
С. 20%
D.
40%
100%

Answer 1

Answer:

40%

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Explanation:

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Answer 2

40% is the correct option

explanation

CaCo3

1Ca atom molar mass= 40

1C atom molar mass = 12

1Oxygen atom molar mass = 16

Total = 40+12+16×3

=100

%Ca=

100

40

×100

=40%