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29 December, 15:11

How many moles of NO2 are present in 138.01 g

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Answers (1)
  1. 29 December, 16:02
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    3.0002 moles

    Explanation:

    Data Given:

    mass of NO₂ = 138.01 g

    No. of moles NO₂ = ?

    Solution

    To find mass of sample mole formula will be used

    mole formula

    no. of mole = mass in grams / molar mass

    Molar mass of NO₂ = 14 + 2 (16)

    Molar mass of NO₂ = 14 + 32 = 46 g/mol

    Put values in above equation

    no. of mole = 138.01 g / 46 g/mol

    no. of mole = 3.0002 moles

    no. of mole of NO₂ = 3.0002 moles
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