GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which would weigh more, a mole of atoms of H or a mole of atoms of He?
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a mole of atoms of H
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a mole of atoms of He
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They are the same
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6.02 x 1023
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Explanation:
Detailed explanation-1: -1 mole of Helium atoms will have a smaller mass than 4 moles of Hydrogen atoms.
Detailed explanation-2: -∴ 2 moles of CaCO3 weighs the highest.
Detailed explanation-3: -By this definition, one mole of hydrogen is 2.016 grams, one mole of methane is 16.043 grams, and one mole of water is 18.015 grams. We can convert any gram quantity of a chemical substance to moles by dividing by its molecular weight.
Detailed explanation-4: -This means that one mole of carbon atoms would have a mass of 12.01 g, and 1 mole of hydrogen atoms would have a mass of 1.01 g. This means that this statement is TRUE, one mole of carbon atoms is approximately 12 times heavier than a mole of hydrogen atoms.
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