2. Using the following data, calculate the average atomic mass of magnesium (give your answer to the nearest .01 ) : Show all work!
Isotope: Mg Percent abundance: 78.70%
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Isotope: 'Mg Percent abundance: 10.13% 25
Isotope: Mg Percent abundance: 11.17% 26

Part b: study of equilibrium on solubility: mg(oh)2(s) ⇌ mg2+(aq) + 2 oh–(aq) cloudy clear (pink) 7. a. b. 8. a. b. 9. 10. 11. 12. when adding concentrated hydrochloric acid, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 7a. you should indicate which ion was added to or removed from the equilibrium mixture. when adding edta, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 8a. you should indicate which ion was added to or removed from the equilibrium mixture. upon heating in which direction is the equilibrium shifting? upon cooling in which direction is the equilibrium shifting? is the forward reaction a. endothermic explain your answers to questions 9, 10, and 11. (l) left (r) right (l) left (r) right b. exothermic

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?