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22 August, 04:54

Which pair of samples contains the same number of oxygen atoms in each compound?0.20 mol Ba (OH) 2 and 0.20 mol H2SO40.20 mol Br2O and 0.20 mol HBrO0.10 mol Fe2O3 and 0.50 mol BaO0.10 mol Na2O and 0.10 mol Na2SO4

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  1. 22 August, 05:05
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    0.20 mol Br2O and 0.20 mol HBrO have the same number of oxygen atoms

    Explanation:

    0.20 mol Ba (OH) 2 and 0.20 mol H2SO4

    In Ba (OH) 2 there are 2 moles of O atoms in every mol of Ba (OH) 2.

    Number of O atoms in 0.20 moles Ba (OH) 2 = 2*0.20 = 0.40 moles O atom

    In H2SO4 there are 4 moles of O atoms for every mol of H2SO4.

    Number of O atoms in 0.20 moles H2SO4 = 4*0.20 = 0.80 moles O atom

    ⇒ 0.20 mol Ba (OH) 2 and 0.20 mol H2SO4 do not have the same number of oxygen atoms.

    0.20 mol Br2O and 0.20 mol HBrO

    In Br2O there is 1 mol of O atoms in every mol Br2O

    Number of O atoms in 0.20 moles Br2O = 0.20*1 = 0.20 moles O atom

    In HBrO there is 1 mol of O atom in every mol HBrO

    Number of O atoms in 0.20 moles HBrO = 0.20 * 1 = 0.20 moles O atom

    ⇒ in 0.20 moles Br2O and 0.20 moles HBrO we have the same number of oxygen atoms

    0.20 moles of Oygen contains: = 0.20 * 6.022*10^23 = 1.2 * 10^23 O atoms

    0.10 mol Fe2O3 and 0.50 mol BaO

    In Fe2O3 there are 3 moles of O atoms in every mol of Fe2O3

    Number of O atoms in 0.10 moles Fe2O3 = 0.10 * 3 = 0.30 moles O atom

    In BaO there is 1 mol of O atoms in every mol BaO

    Number of O atoms in 0.50 mol BaO = 1*0.50 = 0.50 moles O atom

    ⇒ 0.10 mol Fe2O3 and 0.50 mol BaO do not have the same number of oxygen atoms.

    0.10 mol Na2O and 0.10 mol Na2SO4

    In Na2O there is 1 mol of O atoms in every mol of Na2O

    Number of O atoms in 0.10 mol Na2O = 1*0.10 = 0.10 moles O atom

    In Na2sO4 there are 4 moles of O atoms in every mol of Na2SO4

    Number of O atoms in 0.10 mol Na2SO4 = 4*0.10 = 0.40 moles O atom

    ⇒ 0.10 mol Na2O and 0.10 mol Na2SO4 do not have the same number of oxygen atoms.
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Home » Chemistry » Which pair of samples contains the same number of oxygen atoms in each compound?0.20 mol Ba (OH) 2 and 0.20 mol H2SO40.20 mol Br2O and 0.20 mol HBrO0.10 mol Fe2O3 and 0.50 mol BaO0.10 mol Na2O and 0.10 mol Na2SO4
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