00:01
So the first step to calculate how much dioxin is present in 2 .5 liters of water, we need to calculate the grams of water present in 2 .5 liters.
00:13
Now, we are told the density is 1 gram per milliliter, so we have 2 .5 liters, 1 gram per 1 milliliter, and that equals 2 ,500 grams of h2o.
00:28
Now, we are told that this water source contained 0 .085 % dioxin by mass, so we're going to use our mass percent formula.
00:40
So, 0 .085 % equals our dioxin mass over our total mass times 100%.
00:46
Let's remove the 100%, and convert our percentage into decimals, which will give us 0 .00085, is equal to x, which is representing our dioxin mass.
00:58
Over the total mass, which is equaling 2 ,500 grams of water plus x...