Given a 240.0 g sample of sulfur trioxide (MM = 80.1 g/mol), how many grams of oxygen (MM = 32.0 g/mol) are produced,
assuming the decomposition goes to completion?

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)

Sorry i dont understand the question can you rephase it?

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.