00:01
Chemistry is the study of matter and the chemical reactions between substances, where chemistry is also the study of matter's composition, structure and properties.
00:11
Here we're looking at a few different calculations.
00:14
So firstly what we have is the electron.
00:17
And so we take 9 .10938 times 10 to the minus 28 grams.
00:25
And we multiply that by avogadro's number.
00:29
And what we get is 5 .48.
00:33
6, 5 times 10 to the minus 4 grams per mole for part a.
00:42
And then for part b, we have the proton, where we do the same thing, we take the mass, multiplied by avagadro's number, to get 1 .007 grams per mole.
00:56
Then we can look at part e, which is the donut, where we have 74 grams multiplied by avagos number...