All right. So you were tasked with another boiling point elevation question. And so let's go ahead and get our bowling point equation up on our screen here. So it tells us that the change in bowling point when we add a non volatile saw you to a solvent is going to be equal to the van off. I factor times the boiling point, constant times the morality. And so, in this case, what they're asking is to find is a normal bowling point of the solvent kind of based on the results when the bowling point was elevated due to the presence of the soul Butte. Okay. And so, essentially, what we're going to be doing toe find our final answer is solving for how much the bowling point change. They tell us that the bowling point was 79.1. And if we can figure out how much of a change that waas from the original bowling point, then we can subtract to find the original starting boiling point him before it was elevated. All right, so let's go ahead and fill in the information that we know. So our Salyut here's glucose, which is a CO Vaillant compound. Covent Compounds Event a factor one because they do not break in the multiple particles when dissolved and an assortment the came. But you was something that we had to look up in the textbook and that is specific to our solvent. Ethyl alcohol that has a value 1.22 degree Celsius times a kilogram. Permal. That's a set value for the solvent. Then the last portion that we need to solve for is the morality. The morality is defined as the moles of saw. You'd her the kilograms of solvent. And it's just another way to measure the concentration of decision. In this case are saw. You'd is glucose, and we're told that we have 26 grams of glucose, which has a chemical formula. C six, h 12 06 So what we'll do to convert from grams to moles is will add up the molar masses of six carbons. 12 hydrogen zand, six oxygen's from the periodic table that results in overall mass of 180.18 grams. To find our number of moles will divide 26 divided by 1 80.18 and that tells us that for our Salyut. We have 0.1 core, four moles of it. That's what we'll go in the numerator when we're solving for morality. Next, we need to find the kilograms of soul in which is ethyl alcohol. They tell us that we have 285 brands of ethyl alcohol when going from grams. Two kilograms you divide by 1000 which is the same is moving the decimal place three spots to the ride. This is going to result in value and point to 85 kilograms of our solvent. And so what we can do is go ahead and plug that in, just as is. That's that's 0.1 44 divided by point to 85 that will make her answer a little more accurate. Armpits. Let's go ahead and multiply everything together one times 1.20 times 0.144 divided by 0.285 And make sure that this last part in parentheses and so what? Lincoln's for us for the change in boiling point because it tells us that it has changed by 0.0.62 degrees Celsius. Now take note because this is not why our final answer So what this dope it eBay means is it's telling us the bowling point was elevated by this much. So when we have done this experiment, the bowling point was measured at 21 or excuse me is 79.1 degrees Celsius, and so if it was raised by 0.62 degrees Celsius, what we have to do is subtract to find the original bowling point. So if we do 79.1 minus 1.62 what that gets us for our original boiling point with 78.5 more or less degrees Celsius for the original boiling point before it was elevated.