(c) In that same messy lab (which is not MCTC’s lab), the student finds two more unlabeled bottles that are either CO2 or H2. Based on their APPEARANCE recorded on page 2, how can she determine which substance is which? Do not answer with an activity that is more than looking at the bottles.

they are both synthetic elements

explanation:

d

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )

i believe the answer is three water molecules

yes the answer is total mass in unchanged   : )