Which of the following is an element? a. salt b. iron c. nylon d. sand

Question

Which of the following is an element?
a. salt
b. iron
c. nylon
d. sand

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Bơ 4 years 2021-09-02T18:35:22+00:00 1 Answers 35 views 0

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  1. thuthao
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    2021-09-02T18:37:17+00:00
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    Answer:

    The Answer is (B) Iron

    Explanation:On the periodic table the only that was there out of these is Iron and Iron is a natural resource so it is an element. Salt and sand are a different type of element. and Nylon is a material.

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