SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Calculate the number of atoms in 1 g of He.
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1.5 x 1023
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0.25
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4
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4.15 x 10-25
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Explanation:
Detailed explanation-1: -Hence, 1 g He has 1.506 × 10 23 atoms, and occupies. 6 liters of volume at STP.
Detailed explanation-2: -The definition of Avogadro’s number of 6.022 × 1023/mole is the number of atoms or molecules per one gram atomic weight. For one gram atomic weight of hydrogen with atomic weight of one gram, one mole of hydrogen contains 6.022 × 1023 hydrogen atoms.
Detailed explanation-3: -Volume of 1.5 gram atom of Helium = 1.5 × 22.4 = 33.6L.
Detailed explanation-4: -One gram of helium is one fourth mole and hence its internal energy is 41×23R×100=300J, ( By taking the value of R to be approximately 8J mol−1 K−1)
There is 1 question to complete.