They say their research shows, for the first time, that caffeine, catechols, and chemical-substances called N-alkanoly-5-hydroxtryptamides stimulate molecular mechanisms of stomach acid secretion in human stomach cells.
Page 1 of 7. Specific Heat. Objectives. In this lab you will. â¢ measure the specific heats of aluminum and lead using a calorimeter and the. Vernier Temperature Sensor. â¢ observe how the temperature of your system reaches equilibrium in real time. â¢ plot your data and analyze it using the Vernier Logger Proâ¢ software.
(a) A 135 g mass of aluminum is formed into a right circular cylinder, shaped so that its height equals 2.5 times its diameter. Calculate the resistance between the top and bottom faces of the cylinder at 20Â°C. (b) Calculate the resistance between opposite faces if the same mass of aluminum is formed into a cube.