GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How many molecules in 2 moles of methane (CH4)?
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2 x 6.02 x 1023
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10
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2
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2 / 6.02 x 1023
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Explanation:
Detailed explanation-1: -Answer and Explanation: There are 4.8 x 1024 hydrogen atoms in 2.0 moles of CH4 . This is also the equivalent of eight moles of hydrogen atoms. We can calculate the number of atoms using Avogadro’s number.
Detailed explanation-2: -2grams of CH4 = 1/4 mole particles. Hence, 2g of methane would have 1/4 moles of particles. in simple its (1/4)(6.022)(10)^23 = 1.5011 × (10)^23 particles.
Detailed explanation-3: -Well, 6.022×1023 methane molecules have a mass of 16.01⋅g .
Detailed explanation-4: -We can divide the number of molecules by Avogadro’s number to find the number of moles: 2.45x1010 / 6.02x1023 = 4.07x10−14 mol.
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