Calculating The Mass Of A Mole
By DarthVader
Date: 2022-04-11
Topic: 100 see comments
Post views: 1126
Calculating The Mass Of A Mole
You can think of the mass of one mole as the atomic mass in grams. For example, the atomic mass of sulphur is 32.1, so a mole of sulphur has mass of 32.1 g.
Atomic Mass In Grams
You can find the mass of a molecule by adding together the atomic masses of all the atoms that make up the molecule E.G.
- The atomic mass of oxygen is 16.0, so a molecule of oxygen gas, formula O2, has molecular mass 16.0 + 16.0 = 32.0. The mass of a mole of O2 is 32 g.
- The molecular mass of sulphur dioxide, formula SO2, is 32.1 + 16.0 + 16.0 = 64.1. The mass of a mole of SO2 is 64.1 g.
Kmole
Chemical engineers often use the unit of the kilomole (abbreviated kmole), which is the atomic mass in kilograms (1 kmole = 103 mole). So you can also say that a kmole of SO2 has mass of 64.1 kg.
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