In an acid-base titration, 23.30 ml of hydrochloric acid were neutralized by 19.50 ml of 0.315 mol/l potassium hydroxide. calculate the concentration of the hydrochloric acid.

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate, m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?