GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2.53 x 1024 molecules
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3.79 x 1024 molecules
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3.49 X 10-24 molecules
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1.26 X 1024 molecules
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Detailed explanation-1: -Now that we have that figured out, it’s pretty easy to find out how many molecules of CO2 are in 2.10 moles of it. All we do is multiply the number of moles we’ve got, which is 2.10, by the number of molecules per mole, or 6.02 x 1023 molecules. What do we get? We get 1.26 x 1024 molecules of CO2.
Detailed explanation-2: -Answer and Explanation: Using the Avogadro’s number: 1 mole=6.022∗1023 molecules 1 mole = 6.022 ∗ 10 23 molecules .
Detailed explanation-3: -It’s a number. Called Avogadro’s number. That’s it. With that being said, there are 2.1 x (6.022 x 10^23) = 1.265 x 10^24 molecules in 2.1 moles of CO₂.
Detailed explanation-4: -The molar mass of CO is 28.01 g/mol. Hence, there are 1.64 moles of CO in 46 g. It is known that in one mole, there are Avogadro number of molecules i.e. 6.023×1023 6.023 × 10 23 molecules.