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A 2.05 g sample of palmitic acid (C16H32O2), a common constituent of fats, is burned in a bomb calorimeter. The temperature of the calorimeter increases by 31.6oC (Celsius). Given that the energy of combustion (?E) for palmitic is -39.2 kJ/g, calculate the heat capacity of the bomb calorimeter. Make sure you enter kJ/C for your unit behind the number.heat capacity of the calorimeter =
Construct the lewis structure model for the ionic compound potassium chloride using the following steps.
A galvanic cell is constructed that has a zinc anode immersed in a Zn(NO3)2 solution and a platinum cathode immersed in an NaCl solution equilibrated with Cl2 gas at 1 atm and 25 degrees centigrade.
A three-step industrial process involves both heat and work. Calculate the overall change in energy DE for the entire process, given these three individual steps.
Consider a 75.0g sample of H2O(g) at 125C. What phases are present when 215kJ of energy is removed from this sample?
Describe six physical and six chemical changes. Explain why each is a physical or chemical change.
Calculate the pH after each of the following volumes of NaOH have been added: 0 mL, 10.00mL, 19.90mL, 20.00mL, 20.10mL
What do you think the small piece of filter paper accomplishes when placed on the copper Cu
The density of an unknown gas is 4.00 grams per liter at 4.00 atmospheres pressure and 127 degrees C. What is the molecular weight of the gas?
At 100oC, the equilibrium constant (Kc) for the reaction COCl2(g) = CO(g) + Cl2(g) has a value of 2.19 x 10-10. Is the following mixture at equilibrium?
A 12-gram mixture of methane, CH4, and ethane, C2H6, is completely combusted in oxygen. If the total mass of H2O produced is 23.4 grams, what was the approximate mass of the methane in the original mixture
A buffer having equal amounts of a weak acid and its conjugate base has a pH =4.4. A small amount of sodium hydroxide was combined to this buffer solution .
What are the active ingredients & determine what possible tests to perform to identify each active ingredient. (what is the expected result?) - can't use melting points, boiling points, burning of solids, benedict's solution and tasting.
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