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21 July, 14:29

which of these equations are balance a) 3 H2SO + 2AI = AI2 (SO4) 3 3H2 b) 2KCI + Pb (NO3) 2 = 2KNO3 + PbCI2

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  1. 21 July, 16:37
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    Both equations are balanced.

    a) 3H₂SO₄ + 2Al ⟶ Al₂ (SO₄) ₃ + 3H₂

    On the left On the right

    6H 6H

    3S 3S

    12O 12O

    2Al 2Al

    b) 2KCl + Pb (NO₃) ₂ ⟶ 2KNO₃ + PbCl₂

    On the left On the right

    2K 2K

    2Cl 2Cl

    1Pb 1Pb

    2N 2N

    6O 6O
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