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30.06.2021 •
Chemistry
plz help ASAP on my final project I will give you20$
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Ответ:
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Explanation:
ok 20
Ответ:
Explanation:
Percentage of an element in a compound:
Molecular mass of
= 152 g/mol
Percentage of chromium:
Number of chromium atoms = 2
Atomic mass of chromium = 52 g/mol
Percentage of oxygen:
Number of oxygen atoms = 3
Atomic mas of oxygen = 16 g/mol
The percent composition of Cr in
is 68.42%.
The percent composition of O in
is 31.58%.