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A student heated a hyrated salt sample with an initial mass of 4.8702g, after the first...

A student heated a hyrated salt sample with an initial mass of 4.8702g, after the first heating, the mass had decreased to 3.0662g.
If the sample was heated to constant weight after reheating, what is the minimum mass that the sample can have after the second weighing?

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Answer #1

Answer:-1) When hydrated salt sample heated with initial mass 4.8702 g then because of heating water is removed from sample and mass decreased to 3.0662g.

2) but if the sample was reheated to constant weight after reheating the mass remains constant over time . According to low of conservation of mass , system mass can not change quantity if it is not added or removed.hens quantity of mass conserved over time .Or after heating very very very small amount of mass increases which is difficult to measure.hens the minimum amount of mass after second weighing is 3.0662 g.

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