Based on the diagram, which list places the fossils in
order from youngest to oldest?
o
o
O
o
ammonite, fern, trilobite, gastropod
gastropod, ammonite, fern, trilobite
trilobite, gastropod, ammonite, fern
fern, ammonite, gastropod, trilobite

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