Questions 29 and 30 focus on maintaining the acid-base equilibrium of an ecosystem. When comparing the pH of two lakes suspected of suffering from acid deposition, a student determined the average pH of Lake X to be 4.5 and Lake Y to be 5.5. The concentration of hydronium ions, [HzO" (aq)], in the water from Lake X is Select one: * a. 0.1times that of Lake Y b. 10 times that of Lake Y c. 0.01 times that of Lake Y d. 100 times that of Lake Y Clear my choice Use the information found in question 29 to help you answer the following question: Lake X has twice the volume of Lake Y. If it takes 500 tonnes of limestone to neutralize Lake Y, how much will it take to neutralize Lake X? Select one: a. 100 000 tonnes b. 10 000 tonnes c. 100 tonnes * d. 1000 tonnes Clear my choice