A student measures 10.5g of mercury (II) oxide into an open test tube and heats it. The heat causes the mercury (II) oxide to decompose into mercury and oxygen. After reaction, the student finds the mass of the contents of the tube to be 9.7g. Which one of the following describes these observations?
1)The decomposition of mercury (II) oxide does not obey the Law of Conservation of Mass.
2)0.8 grams of oxygen gas escape from the tube.
3)There must be some pretty big errors associated with student's measurements.
4)Heating destroys some mass.
A student measures 10.5g of mercury (II) oxide into an open test tube and heats it. The heat causes the mercur
With decomposition comes liquid mercury. Heating liquid mercury will cause it to vaporize and escape from the test tube. (Unsafe experiment!)
Reply:0.8 grams of O2 gas escaped
tooth extraction
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