Modules 1-7 review problems module 1 1.) what is the volume of 60.0 g of ether if the density of ether is 0.70 g/ml? 2.) what is the density of 50.0 ml of a substance that has a mass of 25 g? 3.) list each as being a physical change or a chemical change: butter melting, butter burning, sugar dissolving in water, a sandwich getting digested. 4.) list each as being a physical or a chemical property: copper sulfate is blue, iron is a solid, water melts at 0oc, gasoline is flammable, magnesium reacts with acid, salt is soluble in water. 5.) correctly match the terms listed on the left with the substances listed on the right. more than one term may be used for each substance. a. element mg

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

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

Awoman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). what are these specifications in units of centimeters and grams?