00:02
We are told that we have 50 milliliters of one molar hydrochloric acid, and we have 50 milliliters of one molar sodium hydroxide.
00:25
We have temperatures before and after heating, so we can see from a graph that our initial temperature is 23 .0 degrees celsius.
00:39
And after time it passes, we can see that our maximum temperature, our final temperature is 30 .5 degrees.
00:53
And it's a pretty weird graph because it just has three temperatures in it, which wouldn't be what happened at all.
01:09
And we are asked to calculate the heat evolved.
01:15
Calculate the heat evolved.
01:29
And we are to assume density is one gram per milliliter, and our specific heat is 4 .18 or 4 .184 .4 .18.
01:49
Joules per g and it says k.
01:57
So my when i have this there when i have kelvin that can be celsius as well because the magnitude of the degree is the same for both scales.
02:11
We are going to use q equals m c delta t where m equals 50 plus 50 that's mills and 100 mil liters times one millimeter per gram equals 100 grams.
02:40
Our delta t will be 30 .5 degrees c minus 23 .0 degrees c equals 7 .5 degrees c.
03:04
30 .5 minus 7 .5...