1.

Calculate the number of molecules in 360g of flucose.

Answer»

Solution :`"Number of molecules"=("AVOGADRO number"xx"GIVEN mass")/("GRAM molecular mass")`
Gram molar mass of GLUCOSE `(C_(6)H_(12)O_(6))`
`=(6xx12)+(12xx1)+(6xx16)`
`=72+12+96=180g`
`"Number of molecules"=(6.023xx10^(23)xx360)/(180)=6..023xx10^(23)xx2`
`=12.046xx10^(23)" molecules (or)1.2046 "xx10^(24)" glucose molecules"`


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