Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: ()caso4 → ()o2 + ()cas

The law of conservation of mass states that the number of atoms of each element on the product side should equal the number of atoms of each element on the reactant side. The unbalanced equation:

Through introspection, we can see that the Oxygen atom (O) has 4 atoms on reactant side and two atoms on product side.  So in order to balance the equation we add a coefficient of 2 on the oxygen in the product side, to get a balanced equation:

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the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

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