00:01
So we know that the average density of blood, so row is 1 .06 times 10 to the third kilograms per meters cubed.
00:19
And if we donate one pint of blood to the red cross, what mass of blood have we donated? and we want that in grams.
00:24
So we know that our volume is one pint.
00:30
And we are given this conversion that one pint is equal to one half of a liter, and that one liter is equal to 1 ,000 centimeters cubed.
00:47
I don't think this right here, the one pint is equal to one half liter is the exact conversion.
00:52
I believe one pint is equal to like 0 .47 something liters.
00:58
So they're rounding a little bit, which is fine.
01:03
But i'm going to use the numbers that were provided.
01:06
And so in order to find mass, so we want to find the mass of the blood that was donated, right? we have to look at the equation for density, which is row is equal to m divided by v.
01:18
So we have density is equal to mass divided by volume.
01:21
We want mass.
01:22
So we know that mass will be equal to density times volume.
01:30
And so we're just going to have to convert a bunch of stuff because we want this mass in grams.
01:37
And so let's just start doing that.
01:39
So we have mass is equal to density, which is 1 .06 times 10 to the third kilograms per meters cubed...