Small pieces of copper at 100.0°C are placed in 110.0g
of water at 25.0°C
in a perfectly insulated calorimeter. The water and copper reach the same final temperature. The initial and final temperatures of the water are shown.
A.220J
B.230J
C.460J
D.920J

A__ is two or more substances that are together in the same place but are not chemically combined

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

When would a bouncy ball have the most potential energy