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# Air is about 78.0 percent nitrogen molecules and 21.0 percent oxygen molecules Several other gases make up the remaining 1 percent of air moleculesWhat is the partial pressure of nitrogen in air at at?

Updated: 9/17/2023

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Q: Air is about 78.0 percent nitrogen molecules and 21.0 percent oxygen molecules Several other gases make up the remaining 1 percent of air moleculesWhat is the partial pressure of nitrogen in air at at?
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### Nitrogen gas an example of a compound?

Nitrogen in any pure form is an element, not a compound. However, at standard temperature and pressure, nitrogen exists predominantly as divalent molecules.

### How many atoms are found in 9 molecules of nitrogen gas?

At standard temperature and pressure, nitrogen contains two atoms per molecule. Therefore 9 molecules contain 18 atoms.

### How many atoms of each element are there in one molecule of the nitrogen?

At standard temperature and pressure, nitrogen exists in molecules with two atoms each.

### Why isn't Nitrogen very reactive cos?

Nitrogen is usually quite unreactive at both standard pressure and standard temperature. Nitrogen is relatively unreactive because nitrogen molecules are joined together by triple bonds, and these bonds are some of the strongest bonds that can exist between molecules.

### What mass of oxygen contain the same number of molecules as 42g of nitrogen?

Both nitrogen and oxygen exist at standard temperature and pressure as diatomic molecules. Therefore, the relative masses of equal numbers of molecules of the substance will the same as the ratios of their atomic masses, which are 15.9994 for oxygen and 14.0067 for nitrogen. The mass of oxygen that contains the same number of molecules as 42 g of nitrogen is 42(15.9994/14.0067) or 48 g, to the justified number of significant digits.

### Nitrogen can be compresed and cooled into a liquid at a very low temperature So nitrogen normally exist as awhat?

If by "normally" you mean room temperature, nitrogen exists as a gas. It actually comprises a majority of the air we breath. The reason nitrogen becomes a liquid when it is compressed is because when pressure increases, the volume decreases, so the nitrogen molecules fit closer together, making a liquid (this is because the same amount of gas takes up much more space than in liquid form). This relationship between pressure and volume is one of the Gas Laws, which is basically the equation P1V1 = P2V2, where P is pressure, V is volume, 1 denotes conditions prior to a change, and 2 denotes conditions after change in either pressure or volume to a gas. Normally, molecules are alwasys moving, so, when nitrogen is cooled and the temperature decreases, the molecules slow down. As they slow, the molecules are hitting the walls of their container less frequently, creating lower pressure inside the container. As we already know, lower pressure causes molecules to bunch together, bringing a gas to liquid phase. This is why liquid nitrogen is usually sold in thick metal containers--the container walls must be strong since the pressure inside is so high.

### What is the conventional standard state of nitrogen?

Gaseous N2 molecules, because it exists in diatomic form at 1 atm of pressure and 25&ordm;C

### What mass of oxygen contain the same number of molecule as 42g of nitrogen?

Both nitrogen and oxygen exist at standard temperature and pressure as diatomic molecules. Therefore, the relative masses of equal numbers of molecules of the substance will the same as the ratios of their atomic masses, which are 15.9994 for oxygen and 14.0067 for nitrogen. The mass of oxygen that contains the same number of molecules as 42 g of nitrogen is 42(15.9994/14.0067) or 48 g, to the justified number of significant digits.

### What mass of oxygen contain same number of molecule as 42g of nitrogen?

Both nitrogen and oxygen exist at standard temperature and pressure as diatomic molecules. Therefore, the relative masses of equal numbers of molecules of the substance will the same as the ratios of their atomic masses, which are 15.9994 for oxygen and 14.0067 for nitrogen. The mass of oxygen that contains the same number of molecules as 42 g of nitrogen is 42(15.9994/14.0067) or 48 g, to the justified number of significant digits.

### Chemical symbol of nitrogen?

The chemical symbol of a nitrogen atom is "N", but at standard temperature and pressure, nitrogen exists primarily as diatomic molecules with the formula N2. Note that all molecules, even those containing only a single type of atom, have formulas rather than symbols, which are properties of atoms or of elements regarded as abstractions only.

### Do hydrogen nitrogen and oxygen normally occur as single atoms?

With the conditions of temperature and pressure found on the Earth hydrogen and oxygen in their free state are gas molecules consisting of two atoms. But nitrogen gas can also be found in this form.

### What are elements composed of compounds atoms mixtures or molecules?

At sufficiently high temperatures and low pressures, all elements are composed of atoms. At standard temperature and pressure, some elements are composed of molecules, usually diatomic molecules, as with nitrogen, hydrogen, oxygen, and all the halogens.