In order to charge a lead storage battery 410.0 g of PbSO4(s) must be converted into PbO2(s) and Pb(s). If a current of 530 A is used, how long will it take

Jenny places a strip of ph paper into a solution. when she removes the ph paper, it has turned yellow-green. what should jenny do next to determine the ph of her solution? a. use a different testing method because the ph paper should not change colors b. place the ph paper into a machine that reads the ph of the solution c. compare the ph paper's color with the color of ph paper from another solution d. compare the ph paper's color with a chart of colors and ph ranges