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.
Determine the mass of the aluminum. Add 50 mL of 1.4 M potassium hydroxide to the 250-mL beaker containing the aluminum pieces. Place the beaker on a hotplate, or ring stand and ring supports, in a fume hood and heat it so it is hot, but not boiling.