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.
For 2014, you can claim the American Opportunity Tax Credit of up to $2,500 if your student is in his or her first four years of college and your income doesn't exceed $160,000 if you are married filing a joint return ($80,000 for single taxpayers).or 2014, you can claim the American Opportunity Tax Credit of up to $2,500 if your student is in his or her first four years of college and your income doesn't exceed $160,000 if you are married filing a joint return ($80,000 for single taxpayers).