A solution is prepared by dissolving 2 g of a non-volatile solute in 500 mL of solution at \(27^{\circ}\text{C}\). The osmotic pressure of the solution is 0.82 atm. The molar mass of the solute is:
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Always convert temperature to Kelvin and volume to liters before applying colligative property formulas. Also try cancelling constants like \(R = 0.082\) with given values like \(0.82\) to simplify calculations quickly.