4. * All of the following are found in vehicle exhausts except for one. Which one?
a) Lead
b) Carbon monoxide c) Carbon dioxide d) Hydrogen
A
B
С
D​

In order to calculate the amount of heat transferred you must know the __ and specific heat of the material, as well as the change in temperature. a. volume b. density c. mass d. enthalpy

Asolid that forms and separates from a liquid mixture is called

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?