Why would you rather have hot cocoa than lemonade on a cold day? (The lesson is called heat transfer)

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

Connect the whole numbers on the periodic table to indicate what they represent?

What type of electromagnetic waves does the human eye see as the colors red blue or green a visible light waves b radio waves c infrared waves d microwaves