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Ten grams of octane is placed in a bomb calorimeter that contains 200 grams of water at 23.67 °C. After the combustion of octane, the temperature of the water is measured to be 26.33 °C. The heat capacity of the calorimeter hardware is 150 J/?C. How much heat was released per gram of fuel burned? Please answer in J/g.
A chemist produces 460 mL of oxygen gas at - 43 °C and constant pressure. To what Celsius temperature must the oxygen be warmed in order for it to have a volume of 600 mL?
A two-component mixture is analyzed by gas chromatography with flame ionization detection. compound x has a retention time of tr= 11.53 min with N= 16,520 theoretical plates
A 155 g sample of an unknown substance was heated from 25.0°C to 40.0°C. In the process, the substance absorbed 5696 J of energy. What is the specific heat of the substance?
A process involves the performance of electrical work in the amount w' on a system. Show that if the process is carried out at constant pressure, the heat absorbed is delta H-w'.
How much of this compound must be weighed to make 175.0 mL of a 0.15 M solution? How many mL of the 0.15 M solution should be diluted to prepare 150.0 mL of a 0.050 M solution
Problem- The pKb values for the dibasic base B are pKb1 = 2.10 and pKb2 = 7.59. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.95 M B(aq) with 0.95 M HCl(aq).
Why can a first nitration be done at 0 degrees Celsius but the ice bath is removed to complete the reaction in a dinitration
How much carbon dioxide in kilograms is produced upon the complete combustion of 29.1 L of propane (approximate contents of one 5-gallon tank)
What is the pH of a buffer prepared by mixing 57.4 mL of 0.050 M sodium bicarbonate and 10.2 mL of 0.10 M NaOH. (Carbonic Acid: pKa1 = 6.35, pKa2 = 10.33)
the rate constant of some reactions double with every 10 degree rise in temperature. assume that a reaction takes place
Assuming your sample of cereal is 10.00 grams and a recommended serving of cereal is 30.00 grams, how many mg of iron would you expect to extract from your sample
Cyanogen is a gas which contains 46.2% C and 53.8% N by mass. At a temperature of 25C and a pressure of 750 mm Hg, 1.50 g of cyanogen occupies 0.714 L. What is the molecular formula of cyanogen
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