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16 July, 00:55

You are running a lemonade stand with your friend. You prepared 10 liters of 0.7 molarity lemonade, but your friend did online research and found that people prefer 0.4 Molarity lemonade. How can you fix the lemonade you made so that it is 0.4 Molarity without starting over?

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  1. 16 July, 03:55
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    add 7.5L of water

    Explanation:

    M1*V1=M2*V2

    M is molarity, V is volume

    0.7 * 10 = 0.4 * V2

    V2 = 17.5L

    vol. of water to add = 17.5 - 10 = 7.5L
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