Heat the water up a little
Because if you start at one for example you starting at a extra cm/m/mm. So when you get your measurement result it will be wrong by just one cm/m/mm. Hope this wasn't too confusing.
4CO2 is 4 molecules of CO2. CO2 consists of one carbon atom and two oxygen atoms.
Answer: B.
Explanation:
Trust me already took the quiz on it its B.