SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How many carbon atom/s are present in the compounds CaCO3?
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1
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2
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3
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4
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Explanation:
Detailed explanation-1: -Both contain 1 g atom of carbon which contains 6.023×1023 carbon atoms.
Detailed explanation-2: -Calcium carbonate is a molecule that contains one atom of calcium, one atom of carbon, and three atoms of oxygen.
Detailed explanation-3: -One molecule of calcuim carbonate contains 5 atoms.
Detailed explanation-4: -Solution-Molecular mass of CaCO3= 40+12+3×16 = 100 No. mole of CaCO3 = 50g/100g = 0.5 0.5 mole of CaCO3 contains 1.5 moles of oxygen atoms No. of oxygen atoms = 1.5 × 6.022×1023 = 9.033×1023 atoms Mass of Oxygen atoms = 1.5 × 16 = 24 g.
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