A scientist claims that a certain chemical will make fabric waterproof. Which option describes a controlled experiment that will produ

Question

A scientist claims that a certain chemical will make fabric waterproof. Which
option describes a controlled experiment that will produce evidence that will
support or refute her claim?

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Trúc Chi 2 months 2021-07-30T13:03:33+00:00 2 Answers 5 views 0

Answers ( )

    0
    2021-07-30T13:04:48+00:00

    Answer: One group of fabric is treated with the chemical, and the other group is not. Then each group is exposed to water.

    Explanation:

    0
    2021-07-30T13:05:26+00:00

    Answer: She adds different amounts of the chemical to the material and then puts them in the water

    Explanation:

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )