SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the molar mass of CO2?
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12
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16
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32
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44
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Explanation:
Detailed explanation-1: -The molecular mass of carbon dioxide CO2 is 44 g/mole.
Detailed explanation-2: -Thus, molecular mass of carbon dioxide (CO2) = (atomic mass of C) + 2 × (atomic mass of O) = (12 + 32) = 44 u.
Detailed explanation-3: -The atomic weight of a carbon atom is 12 and the atomic weight of oxygen is 16, so the total atomic weight of CO2 is 44 (12 + (16 * 2) = 44). This means that a quantity of CO2 can be expressed in terms of the amount of carbon it contains by multiplying the amount of CO2 by 0.27 (12/44).
Detailed explanation-4: -Therefore, the mass of 1 mole of is 44g.
Detailed explanation-5: -∴ 44g of CO2 has 6. 0×1023 molecules of CO2.
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