Sandy drives west during a three day road trip on the first day she travels 300km and stops for the night then next day she drives for 6 hours and stops 900km for New York City

the answer is a. co2, this would be colder than the : )

explanation:

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.