For the balanced equation shown below, what would be the limiting reagent if 141.0 grams of C8H18 were reacted with 512.9 grams of O2 How much of the excess reagent remains? What is the percent yield if the actual amount of CO2 produced is 371.4 grams?

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.

Which of these best describes an ionic bond?

If you add 10ml of hot water to 10ml of cold water and the change in tempature 8°c calculate how much energy is gained by the cold water