According to About.com, at standard pressure, hydrogen has a boiling point of minus 252.762 degrees Celsius, so converting it from a gas to liquid requires compressing and cooling it. Hydrogen is normally an odorless, colorless gas. It is so light in weight, it is able to diffuse from Earth's atmosphere.Know More
Technifab Products, Inc. says it takes a large amount of energy to compress and chill hydrogen to a liquid. These energy requirements result in a loss of 30 percent of the energy the liquid stores. Storage requires highly insulated and reinforced tanks to maintain temperature and pressure.
NASA uses liquid hydrogen and liquid oxygen as a fuel and oxidizer for its rockets. Its launch pads include vacuum bottles, where the fuel is stored under pressure. Allowing a small amount of the liquid hydrogen to convert back into a gas provides the pressure needed to transfer the liquid from the storage tank into the rocket fuel tank.
The Office of Energy Efficiency & Renewable Energy reports, "On-board hydrogen storage for transportation applications continues to be one of the most technically challenging barriers to the widespread commercialization of hydrogen-fueled vehicles." For hydrogen-fueled vehicles to become competitive with those already on the road, the challenge is finding a safe and affordable method of storage that allows enough fuel to drive the vehicle 300 miles on a single fill.Learn more about Organic Chemistry
An anion gap refers to the difference between the concentration of positively charged ions, known as cations and negatively charged ions, known as anions, in a liquid. The anion gap is often measured as part of medical tests for a variety of conditions.Full Answer >
The freezing point of paradichlorobenzene is 127 degrees Fahrenheit at standard pressure. Paradichlorobenzene is used in agriculture to eradicate mold in soil, kill insects, and repel rodents and other pests. It is used in the home to repel clothes moths and in toilet cleaners.Full Answer >
Gas without ethanol has no added alcohol in the mix. Most of the gasoline sold in the United States is an E10 mix, indicating it is 10 percent ethanol, but E85 is available for flex fuel cars. Only a few service stations sell ethanol-free gas.Full Answer >
Methane gas, also known as marsh gas, is a colorless and odorless gas that is widely available in nature. It is the main component of natural gas and firedamp in coal mines. It is also a product of the anaerobic bacterial decomposition of underwater vegetation.Full Answer >