How many number of molecule present in 15 g of ice ?
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No of molecules = no of moles× Na (Avogadro no)
Since we dont have no of moles ,we need to find that from the goven mass.
No of moles= given masss/molar mass
Molar mass of ice(water-H2O)=＞ 1×2+16=18
moles=15/18 = 0.8334
Hence no of molecules= 0.8334×6.022×10²³= 5.01×10²³molecules
Since we dont have no of moles ,we need to find that from the goven mass.
No of moles= given masss/molar mass
Molar mass of ice(water-H2O)=＞ 1×2+16=18
moles=15/18 = 0.8334
Hence no of molecules= 0.8334×6.022×10²³= 5.01×10²³molecules
vishagh:
Hope it helps comment incase of any doubt..!!! :)
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