FINAL ANSWER: 1 cubic foot of air at standard temperature and pressure assuming average composition weighs approximately 0.0807 lbs.

Multiply the volume of the liquid oxygen by its density, 1.14 g/ml, to calculate the mass of the compound. In our example, the mass of oxygen is 70,000 ml x 1.14 g/ml or 79,800 g. Divide the mass of oxygen by its molecular mass to calculate the number of moles.

0.3173

Oxygen – Weight and Volume Equivalents

Oxygen

15.998 grams

One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1023 molecules of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms, because each molecule of oxygen contains two oxygen atoms.

Explain how a mole is similar to a dozen. The mole is a unit for counting 6.02 1023 representative particles. The dozen is used to count 12 items. Each one-mole quantity has 6.02 1023 particles (atoms), but they will have different masses.

Answer. Hence, Moles = 8/32 = 1/4 moles.

0.5 mole

⇒ 1 g contains → 0.188 × 1023 molecules of di oxygen. ∴ 8 g contains → 0.188 × 8 × 1023 molecules of di oxygen.

1 Answer. There are 3 moles of O in 50 g.

O2 (liquid oxygen or “LOX”) + 2 H2 (liquid hydrogen or ”LH2”). These are usually gas molecules (as some students may know), but in a rocket engine, they are stored at very low temperatures, so are liquid.

oxygen-storage systems Oxygen turns to liquid only when it is kept at very cold temperatures; when it is released under pressure from cold storage, it is converted to a gas. Liquid oxygen can be stored in small or large insulated containers, which can be refilled at…

Common uses of oxygen include production of steel, plastics and textiles, brazing, welding and cutting of steels and other metals, rocket propellant, oxygen therapy, and life support systems in aircraft, submarines, spaceflight and diving.

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What is Liquid Oxygen? Concentrated oxygen is oxygen in gas form, whereas liquid oxygen is oxygen that has been compressed into liquid form. That’s the major difference between the two.

* Contact with liquid Oxygen can cause severe skin and eye irritation and burns as well as frostbite. * Breathing pure Oxygen at high pressures can cause nausea, dizziness, muscle twitching, vision loss, convulsions (fits), and loss of consciousness.

While water, which is made up of mostly oxygen, is one of the rare substances that exist in nature in every form, oxygen itself exists only as a gas. However, the technology exists to bring oxygen to low enough temperatures and high enough pressures to condense into its liquid form.

Liquid helium

Oxygenated water is a relatively new functional water product that has oxygen added to it during the canning or bottling process. The added oxygen is claimed to provide health benefits, including aiding exercise recovery, flushing toxins out of the body, and improving alcohol metabolism.

Liquid oxygen is a cryogenic liquid. Cryogenic liquids are liquefied gases that have a normal boiling point below –130°F (–90°C). Liquid oxygen has a boiling point of –297°F (–183°C).

Solid oxygen forms at normal atmospheric pressure at a temperature below 54.36 K (−218.79 °C, −361.82 °F).

Liquid nitrogen has also been used as a method for cooling concrete for over twenty years. Liquid nitrogen (LN) is an inert cryogenic fluid with a temperature of − 196 °C [− 320 °F].

22 psi

Liquid nitrogen is so cold because of the way molecules change as a gas turns to liquid. Nitrogen doesn’t naturally occur in a liquid form here on Earth. This compression causes the gas to heat up. While keeping the pressure high we cool it down to the temperature of the lab.

copper