Calculate the percentage composition of oxygen in calcium...
Calculate the percentage composition of oxygen in calcium trioxocarbonate(IV) [Ca=40, C=12, O=16]
16
48
40
12
Correct answer is B
Calcium trioxocarbonate (IV) = CaCO3
Percentage of Oxygen = Molar mass of 3OMolar mass ofCaCO3 × 100%
Percentage of Oxygen = (3×16)(40+12+48) x 100%
Percentage of Oxygen = 48100 x 100%
Percentage of Oxygen = 48%
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