00:01
The key to answering this question is to first convert everything into moles if it's not already in moles, and then to go from moles to the number of molecules, we simply multiply by avogadro's number.
00:12
So if we have 6 .37 moles of carbon monoxide, we can multiply by avagadro's number to get the molecules of carbon monoxide, 3 .84 times 10 to the 24.
00:23
If we have 6 .37 grams of carbon monoxide, we first need to convert it into moles carbon monoxide by dividing by the molar mass of carbon monoxide, which is 28 .01.
00:37
Once we have moles, then we multiply by avogadro's number to get the number of molecules.
00:43
And we get 1 .37 times 10 to the 23 molecules of carbon monoxide.
00:51
Next we have 2 .62 times 10 to the negative 6 gram.
00:56
Of water, we'll convert the grams of water into moles of water by dividing by the molar mass of water, and then convert the moles into number of molecules by multiplying by avogadro's number...