What is the mass percent CH₃OH of a 0.256 m CH₃OH(aq) solution A) 0.819 % B) 0.992 % C) 1.23 % D) 1.29 % E) 1.51 %

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Quizplus · Accepted Answer

The correct answer is A because the mass percent of CH3OH can be calculated using the formula: mass percent = (mass of CH3OH / mass of solution) x 100%. The mass of CH3OH can be calculated using the molarity and the molar mass of CH3OH: mass of CH3OH = molarity x molar mass = 0.256 mol/L x 32.04 g/mol = 8.19 g. The mass of the solution can be calculated using the density of water: mass of solution = volume of solution x density of water = 1 L x 1 g/mL = 1000 g. Therefore, the mass percent of CH3OH is: mass percent = (8.19 g / 1000 g) x 100% = 0.819%.

What Is the Mass Percent CH3OH of a 0

What Is the Mass Percent CH₃OH of a 0