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Yes! This is a simple module, isn't it? As we saw earlier, there are \(2\) atoms of Hydrogen and \(1\) atom of Oxygen in 1 molecule of water. \(2\) atoms of Hydrogen weigh \(2 \, \mathrm{amu}\), and \(1\) atom of Oxygen weighs \(16 \, \mathrm{amus}\)
If you have forgotten, let us recall what proportion means. If a mixture is made up of \(4 \, \mathrm{kgs}\) of Object A, and \(8 \, \mathrm{kgs}\) of Object B, the proportion of A to B in the mixture by weight is \(4:8 = \frac{4}{8} = 1:2\).
By weight, what is the proportion of Hydrogen to Oxygen in 1 molecule of water?
  • 1:16
  • 1:8
  • 1:4
  • 4:1