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    #1

    when mixing or when mixed

    "This colorless, tastless gas does not react instantly...........with other substances."

    A. mixing B.it mixed C.when mixing D.when mixed


    I would assume that C is correct because a substance can mix itself with other chemicals without being made to mix with other chemicals?

  1. 5jj's Avatar
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    #2

    Re: when mixing or when mixed

    Quote Originally Posted by Gillnetter View Post
    D is the correct answer. The gas does not react but it does not react until after being mixed - this shoves things into the past.
    D is the correct answer, but I feel that it is the past participle of the passive 'when (it is) mixed'.

    Ostap, chemicals don't normally mix themselves.

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