Question

(ii) Calculate the molar mass of ethyne (C2H2) and Nitric acid (HNO3)

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Answer 1

Answer:

C2H2 = 26g/mol

HNO3 = 63g/mol

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Answer 2

Molar mass of C2H2

The atomic mass of C= 12(6)

The atomic mass of H=1(1)

Then the molar mass of C2H2 = 12×2+1×2

that is 24+2=26grms

Molar mass of HNO3

The atomic mass of H=1(1)

The atomic mass of N=14(7)

The atomic mass of O= 16(8)

Then the molar mass of HNO3 = 1+14+16×3

That is 15+48= 63grms..

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