They are air, calcium chloride brine, sodium chloride brine, alcohol, and similar nonfreezing solutions. The purpose of Class 2 refrigerants is to receive a reduction of temperature from Class 1 refrigerants and convey this lower temperature to the area to be air-conditioned.
Elections for the United States Senate will be held on November 8, 2016, with 34 of the 100 seats in the Senate being contested in regular elections whose winners will serve six-year terms from January 3, 2017 until January 3, 2023.
Midterm elections are the federal elections in which voters choose members of Congress but not a new President. These elections are held halfway between Presidential elections. Voters elect one-third of all U.S. Senators and all 435 members of the U.S. House of Representatives during the midterm elections. The next congressional elections are midterm elections and will be held in November 2018. U.S. House of Representatives Members of the U.S. House of Representatives serve two-year terms, which means that all 435 Representatives are elected in both midterm and Presidential election years.