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Byju's Answer
Standard VII
Chemistry
Molecular Mass
Calculate the...
Question

Calculate the Formula unit mass of CaCl2.


A

110u

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B

112u

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C

100u

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D

111u

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Solution

The correct option is D

111u


Formula unit mass is the sum of the atomic masses of all the atoms in the formula unit of a compound.

So, Formula unit mass of CaCl2 = Atomic mass of Ca + 2 x Atomic mass of Cl

40 + 2(35.5) =111 u.


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