Q 6. Calculate the molar mass of the following substances.
(e) Nitric acid, HNO3
The molecular mass of Nitric acid, HNO3 = 1 * Atomic Mass of N + 1 * Atomic Mass of H + 3 * Atomic Mass of O
= 1 * 14u + 1 * 1u + 3 * 16u
= 14u + 1u + 48u
= 63u
CBSE Class 10 board exams twice a year ‘relief’ or ‘burden’? Parents, schools share mixed views
CBSE Class 10 exams twice a year from 2026; 64.4% students in favor, second attempt optional
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