Mass Of 1 Mole Of Nitrogen Atom Is



Astrometry

Mass of 1 nitrogen atom is 14 amu. 1 mole of nitrogen atoms weigh 14 grams buddy. Dont get confused. Grams and AMU are just units to distinguish the mass of any subsantce practicaly and individualy. 1 mole of any subsatnce contains 6.023×10^23 atoms/molecules ( basically its just counting out the atoms ). The average mass of the atoms of an element compared to the mass of an atom of carbon-12 at exactly 12 atomic mass units 5. Which of the following is the best definition of atomic mass?

Question #b3926

1 Answer

Mass Of 1 Mole Of Nitrogen Atom Is

Explanation:

The trick here is to realize that you're actually looking for the number of moles of atoms present in, presumably, #'7 g'# of nitrogen gas, #'N'_2#.

For starters, a gram-atom is simply Avogadro's constant of atoms, regardless if those atoms are combined in molecules or formula units or floating around on their own.

What Is The Mass Of 1 Mole Of Nitrogen Atom

This is the important distinction between a mole and a gram-atom: a mole of a given substance contains Avogadro's constant of molecules, formula units, or atoms of said substance, while a gram-atom of a given substance contains Avogadro's constant of atoms, regardless of the nature of the substance (molecular, ionic).

In your case, a mole of nitrogen gas contains #6.022 * 10^(23)#molecules of nitrogen gas, #'N'_2# and #2#moles of nitrogen atoms, #'N'#.

You can thus say that a mole of nitrogen gas is equivalent to #2#gram-atoms of nitrogen, or that #1#gram-atom of nitrogen gas is equivalent to #1/2#moles of nitrogen gas.

Now, a mole of nitrogen gas has a mass of approximately #'28 g'# as given by the molar mass of nitrogen gas, which is equal to #'28 g mol'^(-1)#.

Sql workbench for mac. This means that you sample contains

Mole

#7 color(red)(cancel(color(black)('g'))) * '1 mole N'_2/(28color(red)(cancel(color(black)('g')))) = '0.25 moles N'_2#

Mole

You can thus say that the sample contains

#0.25 color(red)(cancel(color(black)('moles N'_2))) * '2 gram-atoms N'_2/(1color(red)(cancel(color(black)('mole N'_2)))) = color(darkgreen)(ul(color(black)('0.5 gram-atoms N'_2)))#

The answer is rounded to one significant figure.

Notice that you get the same answer is you assume that you're dealing with #'7 g'# of elemental nitrogen, #'N'#. Mp3 scan repair windows 10.

The molar mass of elemental nitrogen is approximately #'14 g mol'^(-1)#, which means that #'7 g'# will contain

Mass Of 1 Mole Of Nitrogen Atom Is Measured

#7 color(red)(cancel(color(black)('g'))) * '1 mole N'/(14color(red)(cancel(color(black)('g')))) = '0.5 moles N'#

Now, a gram-atom of nitrogen atoms simply means Avogadro's number of nitrogen atoms, so you can say that #1#mole of nitrogen atoms is equivalent to #1#gram-atom of nitrogen atoms.

Mass Of 1 Mole Of Nitrogen Atom Is

Mass Of 1 Mole Of Nitrogen Atom Is Based

This implies that you once again have

Moles To Atoms Equation

#0.5 color(red)(cancel(color(black)('moles N'))) * '1 gram-atom N'_2/(1color(red)(cancel(color(black)('mole N')))) = color(darkgreen)(ul(color(black)('0.5 gram-atoms N'_2)))#

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