4. A large quantity of a reactant that precipitates solid gold from gold in solution was added to a large sample of ocean water, but only a trace amount of solid gold resulted after filtering the mixture. What do you think could be the problem?
Describe one of the reactants as a limiting reagent in your answer.

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.