What is the pH of 0.5 mol dm-3sodium hydroxide solution

An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

In one or two grammatically correct sentences, write a definition for the term molecule geometry