A flat plug 30 mm thick having an area of 4.0 × 10 –4m2 and made of vulcanized rubber is used for closing an opening in a container. The gas CO2 at 25°C and 2.0 atm pressure is inside the container. Calculate the total leakage or diffusion of CO2 through the plug to the outside in kg mol CO2 /s at steady state. Assume that the partial pressure of CO2 outside is zero. From Barrer (B1), the solubility of the CO2 gas is 0.90 m3 gas (at STP of 0°C and 1 atm) per m3 rubber per atm pressure of CO2 . The diffusivity is 0.11 × 10 –9m2 /s.

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.