Select the safe methods to determine if a hot plate is heating. Select one or more: a. Place the back of your hand a few inches above the surface. b. Observe the heating indicator light (if available). c. Pour some cold water on the surface and see if you observe steam. d. Place the palm of your hand on the surface.

Calculate the molarity of the solution. 6.02 x 1022 molecules of hci (molecular weight = 36.5 g/mole) in 2.0 liters of water m

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

How have the greenhouse gasses increased from the year 2000 to 2018