calculate the number of moles present in9g of ethane
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atomic mass of C- atom=12
atomic mass of H -atom= 1
1mole of C2H6 consists of 2C atoms and 6H atoms
so, M. wt. of ethane =M= 24+6=30
so, n=m/M
where, n is no. of moles, m is the mass of substance, M is the molar mass.
m=9g
M=30
so,n= 0.3 moles
atomic mass of H -atom= 1
1mole of C2H6 consists of 2C atoms and 6H atoms
so, M. wt. of ethane =M= 24+6=30
so, n=m/M
where, n is no. of moles, m is the mass of substance, M is the molar mass.
m=9g
M=30
so,n= 0.3 moles
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