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4 February, 02:54

A chemistry student needs of isopropenylbenzene for an experiment. She has available of a w/w solution of isopropenylbenzene in carbon tetrachloride. Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button. Round your answer to significant digits.

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  1. 4 February, 03:08
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    m = 23.42 g

    Explanation:

    The question is incomplete, but I found this with these dа ta:

    "A chemistry student needs 10.00 g of isopropenylbenzene for an experiment. He has available 120. g of a 42.7% w/w solution of isopropenylbenzene in carbon tetrachloride. 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"

    If your data is different, you only need to replace the data here in the procedure and you should be fine.

    Now, this actually is pretty easy to solve. You need 10 g, and you have 120 g of 42.7% solution of isopropenylbenzene in carbon tetrachloride.

    Basically, the percent means the following:

    For every 100 g of solution of tetrachloride, we have 42.7 g of isopropenylbenzene. And we just need 10 g, so, to know if we have enough solution we only have to do the following calculation:

    %w/w = msto / msol * 100

    From here, we just solve for mass of solution. If the solution is more than 120 g, then we click no solution, so let's see how much is the result:

    42.7 = 10/msol * 100

    msol = 10/42.7 * 100

    msol = 23.42 gWe have enough solution.
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