The brown gas no2 and the colorless gas n2o4 exist in equilibrium, 2no2 n2o4. In an experiment, 0. 625 mole of n2o4 was introduced into a 5. 00 l vessel and was allowed to decompose until equilibrium was reached. The concentration of n2o4 at equilibrium was 0. 0750 m. Calculate kc for the reaction.

Based on the context of this line from james joyce's "araby," what is the correct definition of the word pervades? i recognized a silence like that which pervades a church after a service. a. brings to halt b. illuminates c. hangs over d. runs through

Afood web shows who eats who in any given habitat. every living thing, from one-celled algae to giant blue whales, needs food to survive. each food web is a possible pathway that energy and matter can follow through the habitat. a food web begins with producers: organisms that convert sunlight into usable chemical energy. the food web is completed by the decomposers who turn organic wastes, such as decaying plants, into inorganic materials, such as nutrient-rich soil. decomposers complete the cycle of life, returning nutrients to the soil or oceans for use by producers. in this food web, identify the decomposer.

Two technicians are discussing how to test a car's exhaust by holding a small piece of paper within an inch of the tailpipe mouth. technician a says that if the paper is vibrating due to a "puffing" output from the tailpipe, this signals a smoothly running engine. technician b says that if the paper is being drawn toward the tailpipe, this could indicate burned exhaust valves. who is correct? a. technician b b. both technicians a and b c. technician a d. neither technicians a or b