Which of the following acids (listed with ka values) and their conjugate base would form a buffer with a ph of 2.34? a. hf, ka = 3.5 x 10-4 b. c6h5cooh, ka = 6.5 x 10-5 c. hclo2, ka = 1.1 x 10-2 d. hclo, ka = 2.9 x 10-8 e. hio3, ka = 1.7 x 10-1

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

Which of the following is not true about the atomic model of substances?

The sum of the oxidation numbers in a neutral compound is always