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5 June, 18:20

For each pair below, select the sample that contains the largest number of moles.

Pair A

2.50 g O2

A. N. S: 2.50 g N2

Pair B

21.5 g N2

A. N. S: 15.2 g CO2

Pair C

0.054 g O2

A. N. S:0.081 CO2

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Answers (2)
  1. 5 June, 18:22
    0
    Pair A:

    Answer:

    nitrogen

    Moles of oxygen:

    Number of moles = mass / molar mass

    Number of moles = 2.50 g / 32 g/mol

    Number of moles = 0.08 mol

    Moles of nitrogen:

    Number of moles = mass / molar mass

    Number of moles = 2.50 g / 28 g/mol

    Number of moles = 0.09 mol

    Pair B:

    Answer:

    nitrogen

    Moles of nitrogen:

    Number of moles = mass / molar mass

    Number of moles = 21.50 g / 28 g/mol

    Number of moles = 0.77 mol

    Moles of carbon dioxide:

    Number of moles = mass / molar mass

    Number of moles = 15.2 g / 44 g/mol

    Number of moles = 0.341 mol

    Pair C:

    Answer:

    Both have same number of moles.

    Moles of oxygen:

    Number of moles = mass / molar mass

    Number of moles = 0.054 g / 32 g/mol

    Number of moles = 0.002 mol

    Moles of carbon dioxide:

    Number of moles = mass / molar mass

    Number of moles = 0.081 g / 44 g/mol

    Number of moles = 0.002 mol
  2. 5 June, 18:32
    0
    A: 2.50 g n2

    B:21.5 g N2

    C:0.081 CO2
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Home » Chemistry » For each pair below, select the sample that contains the largest number of moles. Pair A 2.50 g O2 A. N. S: 2.50 g N2 Pair B 21.5 g N2 A. N. S: 15.2 g CO2 Pair C 0.054 g O2 A. N. S:0.081 CO2
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