When a mixture of limestone and clay is heated in a rotary kiln, cement is produced. burning a mixture of methane and air heats the kiln. carbon dioxide is one of the main gases give two reasons why. and give a reason why sulphur dioxide has a high percentage coming out of the kiln?

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.

Which of these are physical changes in matter? check all that apply boiling water a pencil being sharpened exploding dynamite freezing water rotting cheese