Discover the expert in you.
Discover the expert in you.
Even though it looks calm, a liquid sitting in a sealed container is still very active. When there is air above the liquid, some molecules of the liquid evaporate to become gas -- vapor -- while others condense to become liquid again. Eventually, these two movements are balanced and the liquid and gas are in equilibrium. At this point, the gas above the liquid has a pressure which also happens to be equivalent to the concentration of the gas. To convert the vapor pressure to concentration, use the ideal gas law which takes into account both the pressure and the…
The milliliter, abbreviated to ml, is a metric unit of volume equivalent to one thousandth of a liter, and is commonly used in Europe and in scientific measurements. The Omnibus Trade and Competitiveness Act of 1988 designated "the metric system of measurement as the preferred system of weights and measures for United States trade and commerce." The gallon, however, has remained more familiar than the liter in the United States, resulting in the need to convert between the two systems. The process is straightforward, but a calculator is required.
As discussed in Raymond Chang’s introductory textbook “Chemistry,” a mole is a measure of molecules, equal to approximately 6.022x10^23 molecules, where the caret ^ refers to exponentiation. Using the ideal gas formula, you can find the number of moles of carbon dioxide (CO2) in a container if you know the other needed parameters and conditions. Above 150 pounds per square inch (PSI), or around 10 times normal atmospheric pressure, the ideal gas formula starts losing accuracy and the Van der Waals formula becomes increasingly preferable.
Understanding how to convert gallons to inches of water, or vice versa, is not necessarily a skill that most people find useful on a day-to-day basis. Still, there are certain situations that arise when this knowledge becomes essential. The conversion process becomes necessary when attempting to forecast water usage costs, fuel usage in some parts of the world, the amount of chemicals needed in a swimming pool and other such situations. Fortunately, making these conversions is merely a matter of applying some simple mathematical formulas.
