The ethylammonium ion, ch3ch2nh3+, has a pka of 10.81. it reacts with water to form ethylamine, ch3ch2nh2 and h3o+.
which of the following statements is true at ph 7? a.) ethylamine predominates b.) ethylammonium ion predominates c.) the ph is higher than pka of the ethylammonium ion
d.) the concentration of ethylamine equals that of ethylammonium ion

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's