How many gram molecules of hydrogen are present in 20 gm hydrogen?
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2 gram molecules of hydrogen are present in 20 gm hydrogen
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how many gram molecule of hydrogen are present in 20 gm hydrogen
how many gram molecule of hydrogen are present in 20 gm hydrogen
chemistry
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asked Jul 5, 2017 by pardeepbaloda66

1 Answer
Solution :
no. of molecules = no. of moles×Avogadro's number the number of mole n = mMM,
where MM is the molar mass which is equal to 2.0 g/mol. And m = 20g.
Therefore,
n=20/2.0=10 mol
Therefore, no. of molecules=10×10^2mol×6.022×10 ^23molecules
no. of molecules=6.022×1026molecules
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Home >> Extras >> Student Questions
how many gram molecule of hydrogen are present in 20 gm hydrogen
how many gram molecule of hydrogen are present in 20 gm hydrogen
chemistry
 Share
asked Jul 5, 2017 by pardeepbaloda66

1 Answer
Solution :
no. of molecules = no. of moles×Avogadro's number the number of mole n = mMM,
where MM is the molar mass which is equal to 2.0 g/mol. And m = 20g.
Therefore,
n=20/2.0=10 mol
Therefore, no. of molecules=10×10^2mol×6.022×10 ^23molecules
no. of molecules=6.022×1026molecules
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