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Question

Calculate the molecular mass of HNO3 ?


A

67u

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B

65u

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C

63u

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D

61u

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Solution

The correct option is C

63u


The molecular mass of HNO3 = the atomic mass of H + the atomic mass of N + the atomic mass of O

= 1 + 14 + 3× 16 = 63u


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