Theoretically, what volume of hydrogen gas at 27°c and 680 torr is produced in the reaction of 15. 0 g al metal with excess hydrochloric acid to produce alcl_{3} and h_{2} (hint: you may want to write and balance an equation first)?.

Adult wasps sting caterpillars and inject their eggs into the caterpillars. the larvae feed on the caterpillars, leading to the death of the caterpillars. what kind of a relationship exists between the wasps and the caterpillars? a. the adult wasps are parasites to the caterpillars. b. the caterpillars are parasites to the wasps. c. the adult wasps are commensals, and the caterpillars are hosts. d. the caterpillars are commensals, and the adult wasps are hosts.