GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The mass of one Avogadro number of helium atom is
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1.00 gram
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2.00 gram
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3.00 gram
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4.00 gram
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Explanation:
Detailed explanation-1: -Avogadro’s number is an absolute number: there are 6.022×1023 elementary entities in 1 mole. helium has a molar mass of 4.0 grams per mole. So one mole of helium has a mass of 4.0 grams.
Detailed explanation-2: -Solution: Avogadro number of helium, He atoms = 1 mol of He.
Detailed explanation-3: -We have to calculate the number atoms from the given options. 4 g of Helium is equal to 1 mole.
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