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.
The American Opportunity Credit applies only to the first four years of post-secondary school education (university, college, vocational school, nonprofit and for-profit institutions) You can claim up to $2,500 per eligible student, per year. The credit covers 100% of the first $2,000 of qualified tuition, required fees, and qualified expenses, plus 25% of the next $2,000. 40% of the credit is refundable, so you may receive $1,000 per eligible student as a tax refund even if you owe no tax.