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Q.

 Is it true that the mass of calcium oxide is 56u?

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a

False

 

b

True

answer is A.

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Detailed Solution

The above statement is true.

Calcium oxide contains one calcium atom whose molar mass is 40 grams and one oxygen atom, which has an average molar mass of 16 grams per mole. While combining these masses,

CaO

=>

40 + 16

=> 56g

It gives us a molar mass of 56 grams per mole of calcium oxide.

  
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