October 09, 2024, 10:10:02 AM
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Topic: Difference between Molar Mass and Relative Molecular Mass  (Read 1118 times)

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Offline Shiningstar

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Difference between Molar Mass and Relative Molecular Mass
« on: September 06, 2024, 03:10:12 AM »
I have a few questions about Molar Mass and Relative Atomic/Molecular Mass.
1. Can we use these 2 interchangeably in our calculations as they are numerically equivalent?
Thank you.

Offline Hunter2

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Re: Difference between Molar Mass and Relative Molecular Mass
« Reply #1 on: September 06, 2024, 03:40:12 AM »
Yes, but consider
Molar mass M is the mass of 1 mol of the compound. Unit is g*mol^-1.
The relative molar mass (symbol Mr) is a dimensionless quantity related to the molar mass M by Mr = M/(10–3kg·mol–1). In the case of an element, this reduces to the Atomic Weight Ar and, rounded to the nearest integer, it gives the number of nucleons in the most abundant isotope.

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