The sample of metal is heated to 100°C before it is added to the calorimeter. The calorimeter is allowed to sit for five minutes, and the temperature is monitored until the overall system (both water and metal) reaches thermal equilibrium at a temperature of 15.5°C. You are given an 80-gram sample of metal and a small calorimeter determine the specific heat of the sample. Before adding the sample, 150 grams of water are added to the calorimeter, and the starting temperature of the water is measured to be 14.1°C. You know that the specific heat of water is approximately 4.184 J/g C. Use the heat absorbed by the water to determine the specific heat of the metal.

What is a scientific theory? a. a scientist's guess about how something works b. the results of an experiment obtained using the scientific method c. a proven fact that will never change d. an idea that is backed by data from many sources

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?