00:02
We're told that an iv sugar solution can be used to treat low blood sugar.
00:08
Dextrose, which is a simple sugar, has a molecular formula c6, h1206.
00:17
Let me go.
00:18
I usually just use 180 as the molar mass, but today we will use 180 .16 grams per mold as the molar mass.
00:35
Okay.
00:36
And we're told that we have five grams, given 5 .00 grams of dextrose in 100 -point -milliliter's of solution, which is 5 .00 % mass volume.
01:08
And we're asked to find molarity, which, as you will recall, is moles per liter.
01:20
This is really simple.
01:24
Going to take our moles, which will be found by doing 5 .00 grams of dextrose, which i'm going to abbreviate as d times the reciprocal of the molar mass, dextrose and dextrose, and we'll divide that by our milliliters.
01:46
I'll go ahead and do the math, 100 milliliters, and we'll multiply that by 1 ,000 milliliters per liter.
01:59
And this will equal 5 divided by 180.
02:04
Point 16 is 0 .0277531 divided by 0 .1010 equals and that will equal 0 .27753 molar or to write sig fig 0 .27278 molar dextrose.
02:47
That's part one...
