During a lab investigation robert was given 5 samples of different metals. each sample was the same color and had the same volume. he was asked to determine which of the 5 samples was copper. based on robert’s knowledge of physical properties of matter, describe how he can do this.

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