CaF 2 (Ksp = 1.5 x 10-10) is formed when solutions of Ca(NO3)2 and NaF are mixed. If 200. ml of 0.0200 M Ca(NO3)2 is added to 350. ml of 0.0300 M NaF, what would be the CALCULATED Ksp?

Four statements about the development of the atomic model are shown below. a: electrons have wavelike properties. b: atoms have small, negatively charged particles. c. the center of an atom is a small, dense nucleus. d: atoms are hard, indivisible spheres. which order of statements represents the historical development of the atomic model? c-d-a-b c-d-b-a d— в-а — с d-b-c-a

Fill in the blanks for the following statements: the rms speed of the molecules in a sample of h2 gas at 300 k will be times larger than the rms speed of o2 molecules at the same temperature, and the ratio µrms (h2) / µrms (o2) with increasing temperature. a not enough information is given to answer this question b sixteen, will not change c four, will not change d four, will increase e sixteen, will decrease

Which of the following statements is true about both nuclear fusion and nuclear fission? they occur in the sun. heavy atoms are split. two light nuclei combine. some mass changes into energy.