A chemistry student needs 20.0 g of thiophene for an experiment. He has available 0.50 kg of a 39.8% w/w solution of thiophene in ethanol. Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button. Round your answer to 3 significant digits.
Added by Joel W.
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To do this, we can use the mass percent formula: Mass percent = (mass of solute / mass of solution) * 100 We are given that the solution is 39.8% w/w, so we can set up the equation: 39.8 = (mass of thiophene / mass of solution) * 100 Show more…
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