Helium is an odorless, colorless gas at room temperature. It is less dense than air. That’s why helium balloons float. It is a non-reactive

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Helium is an odorless, colorless gas at room temperature. It is less dense than air. That’s why helium balloons float. It is a non-reactive gas, a member of the Noble gas family. Its melting point is -272.2 oC and its boiling point is -268.93 o A chemical property of Helium is? A) it’s boiling point of -268.93 oC B) the fact that it’s less dense than air C) It’s lack of color (colorless) D) It’s non-reactivity

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Xavia 2 months 2021-07-31T17:54:02+00:00 1 Answers 5 views 0

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    2021-07-31T17:55:08+00:00

    Answer:

    D. It’s non-reactivity

    Explanation:

    reactiveness is chemical

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