Which option is an example of a pure substance? A. The compound strontium oxide B. Carbon atoms spread evenly throughout iron at

Question

Which option is an example of a pure substance?
A. The compound strontium oxide
B. Carbon atoms spread evenly throughout iron atoms
C. A vinegar and oil salad dressing
D. A disc of silicon with stones of germanium in it

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Nem 3 years 2021-08-24T22:01:05+00:00 1 Answers 13 views 0

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    2021-08-24T22:02:29+00:00

    The correct answer is a

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