Each of the solvents given should effectively separate one of the following mixtures by tlc. match the appropriate solvent with the mixture that you would expect to separate well with that solvent. select your solvent from the following: hexane, methylene chloride, or acetone. you may need to look up the structures of solvents and compounds in a handbook. a. 2-phenylethanol and acetophenone b. bromobenzene and p-xylene c. benzoic acid, 2,4-dinitrobenzoic acid, and 2,4,6-trinitrobenzoic acid

Engineers have contribute to society in many ways like making the technology we use today or any type of power energy material

So what you would do is go through and add 3 teaspoons(tsp) 6 times because of the 6 tablespoons(tbsp). which will give you an answer of 18. another way is to multiply 3x6=18.

The answer to your question really depends on three things: how much water you have, how cold it is to start out, and how cold the things around it are. water actually freezes when it gets to 32 degrees fahrenheit (0 degrees celsius), but the time it takes to get there may be different.  let's start with the first. if you take two glasses, and fill one with a tiny bit of water, and the other about halfway, then put them both in the freezer, the one with less water will freeze first (you can try this at home, but i recommend using plastic cups and not glass ones).  now let's move on to the second part. let's say you have two glasses, and you fill one with really cold water that has been in the refrigerator, and the other with really hot water from the sink. if you put both of them in the freezer, the one that started out colder will freeze first.  for the third part, let's imagine that you have two glasses with the same amount of water in them, and the water is at the same temperature. imagine putting one outside on a really really cold day in georgia, and having a friend in alaska put one outside on the same day. since it would be so much colder in alaska, the glass of water there would freeze before yours.  so, if you took a tiny bit of really cold water in a glass, and put it outside on a cold day in alaska, it would freeze a lot faster than a big glass of hot water outside on a cold day in georgia. 

The se-ci  bonds is more polar  than s-br bond