"the osmotic pressure exerted by a solution is equal to the molarity multiplied by the absolute temperature and the gas constant r . suppose the osmotic pressure of a certain solution is measured to be 23.atm at an absolute temperature of 309.k"

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The concentration is 0.91 mol/ L

Explanation: -

The osmotic pressure = 23 atm

Absolute temperature = 309 K

Universal gas constant = 0.08206 L atm mol⁻¹ K⁻¹

We know the formula

Osmotic pressure = molar concentration x universal gas constant x absolute temperature

Plugging in the values

23 atm = molar concentration x 0.08206 L atm mol⁻¹ K⁻¹ x 309 K

Molar concentration = mol/ L

                                  = 0.91 mol / L