Calculate the no. of molecules in one kg of calcium chloride.

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Solution

Given weight=1kg=1000g gram molecular weight of cacl2=40+71=111g no. of molecules=(given weight/gram molecular weight )avagadro number avagadro number=6.02310^23 No. of molecules=(1000/111)6.02310^23 =5.4*10^24

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Calculate the no. of molecules in one kg of calcium chloride.

Given weight=1kg=1000g gram molecular weight of cacl2=40+71=111g no. of molecules=(given weight/gram molecular weight )*avagadro number avagadro number=6.023*10^23 No. of molecules=(1000/111)*6.023*10^23 =5.4*10^24

Given weight=1kg=1000g gram molecular weight of cacl2=40+71=111g no. of molecules=(given weight/gram molecular weight )avagadro number avagadro number=6.02310^23 No. of molecules=(1000/111)6.02310^23 =5.4*10^24