Mns(s) + 2 h+ < ===> mn2+ + h2s(g) at 25 °c the solubility product constant, ksp, for mns in 5 x 10¯15 and the acid dissociation constants k1 and k2 for h2s are 1 x 10¯7 and 1 x 10¯13, respectively. what is the equilibrium constant for the reaction represented by the equation above at 25 °c? (a) 1 x 10¯13 / 5 x 10¯15 (b) 5 x 10¯15 / 1 x 10¯7 (c) 1 x 10¯7 / 5 x 10¯20 (d) 5 x 10¯15 / 1 x 10¯20 (e) 1 x 10¯20 / 5 x 10¯15

How do i get the answer for 2/3 * 10/3

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average

Lines f and g are cut by the transversal d. the measure of 1 = 2x + 35 and the measure of 8 = 10x - 85. what value of x will show that lines f and g are parallel? a. 19 b. 26 c. 18 d. 15