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.
Experts point to the American Opportunity Tax Credit as the most valuable credit, which is worth up to $2,500 per child. This credit is dollar-for-dollar for the first $2,000 of a student's expenses, and then 25 percent of the next $2,000, Flores says. The American Opportunity Tax Credit is more generous, especially if you have a couple of kids in the first four years of college.