In chemistry, n molecules of an ideal gas have pressure (p), volume (v), and temperature (t) that stand in the following relation, where r is a constant. solve the equation for n, the number of molecules.

Step-by-step explanation:

As per the statement:

In chemistry,

n molecules of an ideal gas have pressure (P),

volume (V), and temperature (T) that stand in the following relation.

Given the equation:

           ......[1]             where R is a constant.

Solve for n;

Divide both sides by RT in [1] we have;

Simplify:

or

Therefore, the number of molecules, is:

ratio is 2 : 9

the answer is three

13.5 : 3