The mole fraction of neon in the air is about 2.6 x 10–5. If the average molar mass of air is 28.96 g/mol what is the concentration of neon in air in ppm?

The concentration of neon in air is 18.14 ppm

Explanation:

We are given:

Mole fraction of neon =

This means that moles of neon are present

To calculate the number of moles, we use the equation:

Molar mass of neon = 20.2 g/mol

Moles of neon = moles

Putting values in above equation, we get:

ppm is the amount of solute (in milligrams) present in kilogram of a solvent. It is also known as parts-per million.

To calculate the ppm of oxygen in sea water, we use the equation:

Both the masses are in grams.

We are given:

Mass of neon  =

Mass of solution (air) = 28.96 g

Putting values in above equation, we get:

Hence, the concentration of neon in air is 18.14 ppm

law of conservation of matter

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).