<u>Answer:</u> The expression of 
is written below.
<u>Explanation:</u>
We are given a chemical compound which is trimethylamine that acts as a weak base when dissolved in water.
It accepts a proton from the water to form trimethylammonium ion and hydroxide ion.
The chemical equation for the reaction of trimethylamine in water follows:
The expression of for above equation follows:
![K_b=\frac{[(CH_3)_3NH^+][OH^-]}{[(CH_3)_3N]}](https://tex.z-dn.net/?f=K_b%3D%5Cfrac%7B%5B%28CH_3%29_3NH%5E%2B%5D%5BOH%5E-%5D%7D%7B%5B%28CH_3%29_3N%5D%7D)
Hence, the expression of is written above.
<span>Ka = [H+][PAc-] / [PAcH]
[H+] = 10^-2.68 = 0.00209M = [PAc-]
[PAcH] = 0.085 = 0.00209 = 0.083
Ka = (.00209)(.00209) / (0.083) = Answer Here.</span>
Answer:
Joule
Explanation:
When we think about the law of conservation of mass, we tend to think about the actual mass of objects. However we forget that energy can be turned into mass, and in turn, mass can be turned into energy. Sometimes there is a loss in mass, but energy is released into the environment which we can always see or measure. So therefore the most inclusive unit of measure to use when referring to the <em>law of conservation of mass</em> is in fact the unit for energy, the joule.
The reason iodine, I2, exists as a solid at room temperature, while bromine, Br2, exists as a liquid at the same temperature, is because: <span>Iodine molecules create stronger London dispersion forces than do bromine molecules.</span>
Answer:C:Carbon
H:Hydrogen
O:Oxygen
Explanation:Every element is represented by a letter that is easy to tell which element it is so you don't have to get confused.
