A solution is 0.022M in Fe2+ and 0.014M in Mg2+. a. If potassium carbonate is used to selectively precipitate one of the cations while leaving the other cation in solutions which cation will precipitate first? What minimum concentration of potassium carbonate will trigger the precipitation of the cation that precipitates first?

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.

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

What was bohr’s contribution to the planetary model