The initial mass of a certain species of fish is 7 million tons. The mass of​ fish, if left​ alone, would increase at a rate proportional to the​ mass, with a proportionality constant of 2​/yr. ​However, commercial fishing removes fish mass at a constant rate of 15 million tons per year. In how many years will all the fish be​ gone?

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

Ways that industry and agriculture use physical properties to separate substances

Can you match these to the correct definition