Consider the titration of 105 ml of 1.45 m ethylamine, ch3ch2nh2 (kb = 5.6 x 10-4) with 0.25 m hcl. how many ml of hcl will need to be added to the ethylamine, ch3ch2nh2 solution to reach a ph of 10.75?

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.

Which element is least likely to undergo a chemical reaction