Chemistry, asked by orgajaysoni73, 1 year ago

How many gram molecules of hydrogen are present in 20 gm hydrogen?

Answers

Answered by Umashankar2004

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

Hope I help you

orgajaysoni73: Last second step me 10^2 se kyu multiply kara???

Umashankar2004: Bhai formula ha see in your book

Umashankar2004: bhai mark as braliest

shrvngswmi: haa

orgajaysoni73: ol

Answered by shrvngswmi

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

orgajaysoni73: Last second step me 10^2 se kyu multiply kara???

shrvngswmi: rule hai

shrvngswmi: formula ka

orgajaysoni73: ok

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