Calculate the molarity of a 3.34 molal solution of sodium chloride; assume the density of the solution is 1.09?



Molar Mass of NaCl = 58.44g/mol

3.34mol NaCl / 1 kg Solvent

3.34mol NaCl x 58.44g/mol = 195.19g NaCl

Total grams of solution = 1195.19g

1195.19g solution x 1mL/1.09g = 1302.76mL = 1.30276L

Molarity = mol/L = 3.34mol / 1.30276L = 2.56379M

Corrected for significant figures, it comes out to 2.56M NaCl solution

What is the concentration (m/m%) of a solution of 10.0 g of sodium chloride in 100.g of solution?

A) 100%
B) 0.100%
C)10.0 M
D)9.09%
E)10.0%


m/m % is the same as wt %.

m/m % = (grams solute/grams solvent) x 100 %

m/m % = (10.0 g sodium chloride/100. g solution) x 100 % = 10.0 %

If you know and apply the definitions this problem becomes easy.

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Google stopft kritisches Sicherheitsloch in Chrome 14

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I took a bus back to Naivasha, which didn’t drop me off in the same place it did a few weeks, prior. They let me off on the highway where a few Boda Bodas were hanging out (apparently they knew I was coming). I told the guy where I was going and he was trying to charge me ridiculous amounts; I told him I’d pay him 100ksh to bring me just into town so I could get a matatu. He argued with me for a while and we finally agreed that he could either get paid 100 to bring me to a matatu or 200 to bring me to the camp. He decided on the latter; we stopped to get some gas and when we were turning onto the road that would bring us to the camp (in the dark, mind you) the back tire skid out and we almost toppled over. Turned out his back tire went flat and we had to sit on the side of the road, again, IN THE DARK, to wait for a matatu. He kept insisting that I give him more money for his tire; it’s not my fault your tire blew out! I got in the matatu which was decked out in black lights and neon décor, and stayed at Crayfish camp the first night. I was thoroughly unimpressed and left early in the morning to go back to Fisherman’s where I had stayed a few weeks prior. I then rented a bike and decided to go to Crater Lake. The park was 19 km away, which was fine for about 14km, the last five were extremely sandy and bumpy. I finally arrived, soaked in sweat. The man at the entrance gate gave me a few wondering options; I decided to go for a loop around the park and end up at the lake. I got lost right away; he said to go straight and at the fork go left. There were two paths that veered left so I chose the one that was well traveled. After walking for about ten minutes, I came across two men and asked them if I was on the right path to the Salt Licks (I didn’t actually know what this meant at the time) and, of course, I had chosen the wrong path. They pointed me to a short cut, basically I was to follow some overhead wires to arrive at...

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Saturday Morning Science Experiment: Ice cold outside, "hot ice ...

Sodium acetate is such a useful little chemical. Not only is it responsible for the awesome flavor of salt and vinegar potato chips, but it also produces the heat in those little reusable hand and foot warmers you can buy at outdoor stores. Plus—when it's just too damn cold outside and you'd rather spend the day indoors—the same reaction that keeps your fingers and toes toasty can also be used for fun at-home art projects.

You can buy sodium acetate online, but all the real Cool Kids are making it themselves .

I came back to my dorm from spring break or something and when I took my full brita pitcher out of the fridge it did the exact same thing as the first experiment. I stood there complete dumbfounded as the entire thing slowly froze solid. I was the first person back from break so nobody was there to show. I wonder now if someone slipped some sodium acetate in it or if there was some weird cross contamination with chips or Boston's water.

Considering that salt is sodium chloride, and vinegar is acetic acid, it is pretty obvious that the flavor of salt and vinegar potato chips is from sodium acetate. But that sounds so much scarier than "salt and vinegar", doesn't it? It's like Japanese seaweed extract. If I tell you that that Japanese have used this natural substance to flavor their food for centuries, it sounds charming, doesn't it? If I tell you that this extract is technically monosodium glutamate (MSG), it sounds all chemical and scary.

the rapid solidification process occurs through what's called homogeneous nucleation. the solution has been supercooled. it was poured very gently into a smooth walled container. this allowed the solution to remain supercooled. upon touching the solution the rough ridges in your fingers, the slight increased temperature and the impact of touching it create nucleation sites. This solidifies the solution near your finger and then creates more nucleation sites and the solid grows out like a dendrite.

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09 Sodium Chloride Solution - News


69 pc milk samples fail quality test, some contain detergents
Appearance of sodium chloride was detected in a milk sample captivated in Assam, while two samples taken in Nagaland saw spectre of Neutralizers, six samples in Mizoram and a taste in Tripura saw presence of SNF and Skim Out Powder.