1. which of the following metals oxidized by calcium ions? a- potassium b- zinc c- iron d- lead 2. the first electrochemical cell was invented by a- michael faraday b- alessandro volta c- james maxwell d- benjamin 3. why cant a lead storage battery be charged indefinitely? a- a direct current must pass through the cells b- the electrodes lose lead sulfate c- it is difficult to reverse the direction of current flow d- the electrolyte is too expensive 4. which electrode (anode or cathode) is designated as positive in an electrolytic cell? a- anode b- cathode c- both d- neither 5. what is the direction of electron flow in an electrolytic cell? a- from cathode to anode b- from anode to cathode c- in either direction d- there is no flow 6. what electrolyte can be used to electrolyze water? a-

56.16 gregor mendel was the first scientist to use statistics to analyze scientific data. before mendel's experiments, scientists believed that organisms acquired traits from their environment and passed them on to their offspring. after mendel's discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. this is an example of pls

Many reactions take place in aqueous solution. when potential reactants are mixed, a reaction will occur if there is some driving force that favors the formation of products. it is often convenient to categorize reactions in terms of these driving forces: precipitate formation, in which an insoluble solid is formed, weak electrolyte formation, as in a neutralization reaction involving water, or transfer of electrons, as in a redox reaction. these reactions can be represented by full molecular equations, which contain all species in the reaction mixture, or by net ionic equations, which show only the species that actually undergo a change. the latter does not contain the spectator ions, which do not undergo a net change or do not take part in the reaction. part a when the following two solutions are mixed: k2co3(aq)+fe(no3)3(aq) the mixture contains the ions listed below. sort these species into spectator ions and ions that react. drag the appropriate items to their respective bins. view available hint(s) spectator ions ions that react part b what is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants? assume that the contribution of protons from h2so4 is near 100 %.ba(oh)2(aq)+h2so4(aq)→ express your answer as a chemical equation. view available hint(s) nothing provide feedback

In in , is to a 28.4-g (1-oz)−23.0 °c to −1.0 °c?