Chemistry, 21.11.2019 06:31 aprilhaters
10-24. the diprotic acid h2a has pk1 5 4.00 and pk2 5 8.00. (a) at what ph is [h2a] 5 [ha2]? (b) at what ph is [ha2] 5 [a22]? (c) which is the principal species at ph 2.00: h2a, ha2, or a22? (d) which is the principal species at ph 6.00? (e) which is the principal species at ph 10.00?
Answers: 1
Chemistry, 22.06.2019 14:00
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.
Answers: 3
Chemistry, 22.06.2019 14:30
In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never
Answers: 2
Chemistry, 22.06.2019 17:30
Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?
Answers: 2
10-24. the diprotic acid h2a has pk1 5 4.00 and pk2 5 8.00. (a) at what ph is [h2a] 5 [ha2]? (b) at...
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