In an experiment, some magnesium ribbon is weighed and its mass is recorded. it is then placed in a crucible and heated. once hot enough, it combines with oxygen to form magnesium oxide (mgo). observe the data table provided. why does the law of conservation of mass appear violated?

B)Some of the product escaped as a vapor from the crucible.

Explanation:

Impurities and magnesium not reacting completely would not lead to less product necessarily. Nitrogen gas getting into the crucible would lead to a larger product mass.

well we can't tell you because we cant see the time give a screen shot or something.

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do