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Calculate the molarity of each of the following solutions:(a) 0.195 g of cholesterol, $\mathrm{C}_{27} \mathrm{H}_{46} \mathrm{O}$ , in 0.100 $\mathrm{L}$ of serum, the average concentration of cholesterol in human serum(b) 4.25 $\mathrm{g}$ of $\mathrm{NH}_{3}$ in 0.500 $\mathrm{L}$ of solution, the concentration of $\mathrm{NH}_{3}$ in household ammonia(c) 1.49 kg of isopropyl alcohol, $\mathrm{C}_{3} \mathrm{H}_{7} \mathrm{OH}$ , in 2.50 L of solution, the concentration of isopropyl alcohol in rubbing alcohol(d) 0.029 $\mathrm{g}$ of $\mathrm{I}_{2}$ in 0.100 $\mathrm{L}$ of solution, the solubility of $\mathrm{I}_{2}$ in water at $20^{\circ} \mathrm{C}$

(a) $5.04 \times 10^{-3} \mathrm{M}$(b) 0.499$M$(c) 9.92$M$(d) $1.1 \times 10^{-3} \mathrm{M}$

Chemistry 102

Chemistry 101

Chapter 3

Composition of Substances and Solutions

Solutions

Composition

University of Central Florida

Rice University

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this question is to calculate the polarity in each of the following solutions. The first solution is 0.195 grams self cholesterol in 0.100 lead is a solution. So you know there's a coconut, the polarity we need to know the mall and also the volley Given the mass weaken determined the mole. Why do you ride in the mass by the molar mass and finally doing everything where the volume to get the malaria. So for this solution import a similarity is determined by taking the mass, which is 0.195 grams. You're waiting by the mill amounts of cholesterol. So you have to compute the mullahs mass off cholesterol here. And when I competed that Thomas I attained the valley off 386 0.661 Graham Spindle Man, You end up dividing by the volume which beginning that's 0.10 point 1200 leaders. This one sold you similarity off life when therefore time sensible minus three Moeller off cholesterol Barbie. We do the same thing. Similar approach. So our polarity is going to be attained by you Read in the move by rolling solution, given the mask or more was going to be the mass read by the molar mass of ammonia. The elements of a morning. 17 points every 31 He's of excluding the units here, but you should include the units one sold in this essentially, for the top part of the units we're going to be in malls and the volume we've been given it considerable five their their leaders. So similarity is going to be you're a point for 999 Moeller Oh, ammonia in part C just like we've been doing Arma levity vehicles will mass on my scariest 1.49 kilograms, just 1004 190 were amps and the mill a mass for isopropyl given by the chemical formula here when I go clear was zero point. Sorry was 60.96 guard the units here as well. The final I said it would have units more per liter and ah, bowling, which has been given this 2.50 leaders. This is going to give us a value. Wolf 9.9 to Mueller off is appropriate. Lastly for Queen 0 to 9 grams off iodine. And when 10 their leaders of solution. Um, polarity. It means to be cool to all mass of flying their planes there to nine grams to edited by the moola. Massive idea, you know, to get the moles minimus abiding. When I sold it, I got 253 When h don't need to write this. Why, William off solution. Just 0.100 Yes, this one so gives the valley of 1.14 terms chance of the bar minus three. Moeller, we're waiting.

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