When i make an account for different college can I use the same email username for each one or do I have make a different username email

How many liters of water vapor can be produced if 108 grams of methane gas (ch4) are combusted at 312 k and 0.98 atm? show all work. pls ! will mark as brainliest

The rules of engagement (roe) working group is often used to (select all that apply.)

What is the empirical formula for c4h8o2