00:01
In this problem, you're considering a pyrex graduated cylinder that can hold 100 milliliters.
00:09
It currently holds 50 milliliters of water at 50 degrees celsius.
00:15
We are going to raise the temperature of both the cylinder and the water by exactly 25 degrees celsius, and we want to know what is the new volume of water or what would the cylinder measure as the new volume of water.
00:33
And we need to account for both the expansion of the cylinder as well as the expansion of the water.
00:42
So we're thinking about expansions here.
00:44
I'm going to go ahead and look up the coefficients of expansion for water in pyrex.
00:50
So the coefficient of volume expansion for water at 50 degrees celsius is equal to 50 times 10 to the negative 5 inverse kelvin.
01:08
And the coefficient of linear expansion for pyrex is equal to 3 .2 times 10 to the negative 6 inverse kelvin.
01:20
We also know that alpha is equal to delta l over l all over delta t, that beta is equal to delta v over v all over delta t.
01:42
But we are thinking about volumes for both of these things.
01:47
So even though we have the coefficient of linear expansion for pyrex, we're not going to actually use that.
01:54
We want to instead use that beta is going to be equal to three alpha...