Balance the equation
a) Pb + PbO, + H2SO, → PbSO, + H2O

To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The balanced equation will appear above.

   Use uppercase for the first character in the element and lowercase for the second character. Examples: Fe, Au, Co, Br, C, O, N, F.

   Ionic charges are not yet supported and will be ignored.

   Replace immutable groups in compounds to avoid ambiguity. For example, C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will.

   Compound states [like (s) (aq) or (g)] are not required.

   You can use parenthesis () or brackets [].

Explanation:

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

the answer

explanation:

the capillary tube was too close to the bottom of the beaker.

the ruler may have moved.

water got into the capillary tube.

the temperature was not allowed to equilibrate in the 2-4 minutes.