Question

How to calculate molecular mass with example???

Answer 1

Answer:

• Determine the molecular formula of the compound.
• Determine the number of atoms of each element in the molecule.
• Multiply the number of atoms of each element with the atomic mass.
• Add the values to get the relative molecular mass/molecular wt.
• EXAMPLE Find the molecular mass of ammonia [ Atomic masses: N-14, H -1]
• Molecular formula of ammonia is NH3
• It has one N and 3 H atoms
• N = 1 x 14 = 14 H = 3 x 1 = 3
• Molecular wt. of ammonia = 14 + 3 = 17

Explanation:

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Answer 2

Answer:

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