The ancient jews began their day at:

sunset
midnight
sunrise

i am on test if you see chemistry on some of my questions thats mean i am on a test : 3

Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .