By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. At standardized conditions for temperature and pressure, two atoms of the element bind to form dioxygen, a diatomic gas that is colorless, odorless, and tasteless, with the formula O 2.y mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. At standardized conditions for temperature and pressure, two atoms of the element bind to form dioxygen, a diatomic gas that is colorless, odorless, and tasteless, with the formula O 2.
American Opportunity Tax Credit. Students may claim this credit if you are over age 24 as long as you meet the other requirements, e.g. are not claimed as a dependent on someone else return, are attending a degree program half-time or more, and have not already completed four years of college.
You can claim the American Opportunity credit for qualified education expenses you pay for a dependent child as well as for expenses you pay for yourself or your spouse. If you have several students in your family, you can claim multiple credits based on the expenses of each student. For example, if you have three kids in college, you can claim up to $7,500 ($2,500 x 3) in American Opportunity credits. The credit is not allowed for a student who has completed the first four years of post-secondary education as of the beginning of the year.