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17. A substance breaks down into its component elements when it is heated. If 68.0 g of
the substance is present before it is heated, what is the combined mass of the
component elements after heating?


Sagot :

The combined mass of its component elements after heating is 68.0 g.

According to the law of conservation of mass, matter is neither created nor destroyed but is converted from one form to another.

When a substance is decomposed into its components, the total mass of components recovered after heating must be equal to the mass of substance before heating in accordance with the law of conservation of mass.

As such, the mass of the elements obtained after heating must also be 68.0 g.

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