Question

The % by weight of O₂ in CaO₄ (O=16, S=32, Ca=40) is



64

28.2

47.2

16.2

​

Answer 1

Answer:

first its CaO2

O2=16×2=32

overall=40+16×2=40+32

=72

percent of O2

=32/72×100

=44.44percent approx

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Answer 2

Answer:

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