the molar mass of oxygen(O2) is 32g. what is the mass of 1.05*10^25 molecules of O2

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the molar mass of oxygen(O2) is 32g. what is the mass of 1.05*10^25 molecules of O2

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Ngọc Khuê 4 years 2021-07-10T18:03:25+00:00 1 Answers 10 views 0

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  1. Nem
    0
    2021-07-10T18:04:31+00:00
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    Answer:

    3.36×10²⁶ g

    Explanation:

    Molar mass ( O2) = 32g/mol

    mole(O2) = 1.05×10²⁵mol

    Mass(O2) = ?

    mole(n)= mass(m)/Molar mass(M)

    n×M = m

    1.05×10²⁵ mol × 32g/mol = mass

    mass= 3.36×10²⁶ g

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