GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How many molecules are there in 9.34 grams of H2O?
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4.08 x 10^22 molecules
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3.12 x 10^23 molecules
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1.01 x 10^26 molecules
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2.73 x 10^25 molecules
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Explanation:
Detailed explanation-1: -Correct answer is 3.12 x 1023 molecules of water Molar mass of water = 18.01 g/mol According to avagadro’s numbe…
Detailed explanation-2: -So 9.34 divided by 18.02 multiplied by avocados number. And we get 3.12 Times 10 to the 23rd water molecules.
Detailed explanation-3: -9 g=6.0222×1023 molecules of H2O=3.011×1023 molecules of H2O. Q.
Detailed explanation-4: -The concept of fractions and multiples described above also applies to molecules: 9.01 g of water would contain 1/2 mole, or 3.01 x 1023 molecules.
Detailed explanation-5: -Therefore, the mass of 9.25×1022 molecules of water is 27.72 g .
There is 1 question to complete.