SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The Molecular mass of CaCl2 is,
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111g
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120g
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140 amu
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None of these
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Explanation:
Detailed explanation-1: -Thus, the formula unit mass of CaCl2 is 111 amu.
Detailed explanation-2: -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.
Detailed explanation-3: -Calcium Chloride structure (CaCl2 Structure) Calcium chloride molecules feature two ionic bonds between the single calcium cation and the two chloride anions. The structure of calcium chloride molecules is illustrated below.
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