Some oil tankers can carry as much as 4 million barrels of oil. if an accident occurred and one of these tankers emptied all of the oil into the ocean, how much area would the resulting slick cover, if we assume the slick is one molecule thick? assume a molecule of oil is a cube that measures 50 micrometers across and a barrel of oil contains approximately 160 liters.

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

This is the substance(s) formed in a chemical reaction.

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic