It is thought that a new process for producing a certain chemical may be cheaper than the currently used process. Each process was run 6 times, and the cost of producing 100 L of the chemical was determined each time The results, in dollars, were as follows:
Can you conclude that the mean cost of the new method is less than that of the old method?
Chapter 7 Notes Chemistry 1120 Chemical Reactions: Energy, Rates and Equilibrium Energy: the capacity to do work or to transfer heat Energy can neither be created nor destroyed. The energy of the universe is constant. It transforms from one form to another. Kinetic energy: energy in motion Potential energy: energy an object possesses (stored energy) by virtue of its position, composition, or physical state 2 2 SI unit for energy is the joule 1 J = kg m /sec Another unit for energy is the calorie 1 cal = 4.184 J The calorie is defined as the amount of heat required to raise the temperature of one gram of water by one degree Celsi