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.
Only one education credit is allowed per student per year, and the person whoâs claiming the credit must be the one whoâs claiming the student (e.g., parent or self). The income limit to receive the American Opportunity Tax Credit is $180,000 when filing jointly or $90,000 if you are single, head of household, or a qualifying widower. Note that the maximum credit is gradually reduced for those making between $80,000 and $90,000 or between $160,000 and $180,000 when married filing jointly.