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O2
Our atmosphere is a colorless, odorless mixture of 18 gases, several of which- ________, N2, H2O vapor, and CO2- play important roles in the environment's life- sustaining redox processes.
square inch
The force exerted per unit of the charge a bond surface area is denoted as pressure (P):* pressure= force /area* The gases in the atmosphere exert a consistent force (or weight) on all surfaces, resulting in atmospheric pressure, which is generally around 14.7 pounds per ________ (lb /in2); psi) of surface pressure.
20°C
When a gas cools, its density rises because its volume decreases, when the temperature drops from ________ to 0°C, the density of O2 (g) rises from 1.3 to 1.4 g /L.
