Sulfur trioxide decomposes to sulfur dioxide and oxygen gas as shown in the following reaction:
2503 (g) 2502 (g) + O2 (g)
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?

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

What is the correct lewis dot structure for arsenic?

How many atoms or molecules are there in a mole of a substance?