A 100. 0 ml sample of 0. 20 m hf is titrated with 0. 10 m koh. Determine the ph of the solution after the addition of 200. 0 ml of koh. The ka of hf is 3. 5 × 10-4.

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution

At element makes up all organic compounds?