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14 November, 03:02

The chemist mixes 3 ML of limestone for every 5 L of water. if she uses 35 L of water how much limestone should she use?

A) 21 ML

B) 28 ML

C) 14 ML

D) None of the above

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Answers (1)
  1. 14 November, 03:13
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    To find the amount of limestone to add, you will set up a proportion of the amount of limestone to the amount of water.

    Limestone 3 ml x 7 x

    Water 5 L x 7 35 L

    To solve for x, multiply 3 and 7 to get 21.

    The chemist will need 21 milliliters of limestone.
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