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A 2.70 g sample of solid (CH3)3NHCl (s) is dissolved in 446 mL of water in a coffee cup calorimeter. Once all of the (CH3)3NHCl (s) is dissolved in the water, the final temperature of the solution is found to be 13.85°C. If the initial temperature of the water in the calorimeter was 20.25 °C, calculate the calorimeter constant (in J/K) for the coffee cup calorimeter.Report your answer to three significant figures.
The heat of solvation of (CH3)3NHCl (s) is 1.46 kJ/mol.
Calculate the cell potential (emf) for a galvanic cell at 298 K composed of a standard aluminum electrode (Al metal and Al 3+ ions at 1.0 M) and a standard cadmium electrode (Cd metal and Cd 2+ ions at 1.0 M.)
The following gas phase reaction is second order. 2C2H4(g)--->C4H8(g) Its half life is 1.51 min when [C2H4] is 0.250 M. a.What is k for the reaction?
if 400 ml of a 0.100M acetic acid and 200 ml of 0.100m solution acetate are mixed, what is the pH?
Identify the property of gas that is measured in each of the following: a) 425 K; b) 1.0 atm; c) 10.0 L; d) 0.50 mol of He.
What would happened if HCl was accidentally used instead of Na2CO3 to extract caffeine from tea bags? Would you be able to fix your mistake. How
O2(g) + 4 HCl(g) → 2 H2O(l) + 2 Cl2(g) When 64.5 g of HCl are allowed to react with 17.6 g of O2, what is the theoretical yield of Cl2(g) in this reaction.
Give at least 3 reasons why sulfonylamide diuretics such as 'Furosemide' do not possess antibiotic activity?
Assuming ideality, how many grams of Xe are needed to inflate a bag with a volume of 867 mL at a pressure of 1.29 bar
Strong base is dissolved in 615 mL of 0.400 M weak acid (Ka = 4.50 × 10-5) to make a buffer with a pH of 3.95. Assume that the volume remains constant when the base is added.
A compounds 'H NMR spectrum shows resonance at 9.28 and 7.50 ppm what possible structural subunit does the compound contain
For each of the following acid-base reactions, calculate the mass (in grams) of each acid necessary to completely react with and neutralize 5.15 of the base.
a 365.0g sample of water,contains 23mg Au. How much gold is present in the sample in parts per million?
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