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A. ?Hsolution of NaOH(s) Phase Change: Mass of NaOH: 1.58 g ?T for reaction A : 7 °C A. ?Hsolution of NaOH Phase Change: Calculate the number of moles of NaOH in the Solution. 0.0395 moles Calculate the value (calories) for the heat of solution. -343 cal Calculate the ?Hsolution for sodium hydroxide?
Consider the titration of 50.0 mL of 0.450 M C5H11N(aq), piperidine solution (Kb = 1.3 x 10-3), with 0.350 M HNO3(aq). What is the pH of the solution when 15.0 mL of 0.350 M HNO3(aq) is added? Calculate the pH of the solution at the halfway point of ..
A gas mixture composed of helium and argon has a density of 0.605g/L at a 741mmHg and 298K .What is the composition of the mixture by volume?
The reaction is first order and has a rate constant of 6.2 ? 10-5 /s at 35?C when the H+ concentration is 0.10 M. Suppose that the initial concentration of sucrose in the solution is 0.40 M. How many minutes will it take for the sucrose concentrat..
calculate the osmotic pressure in torr of 6.00 L of an aqueous 0.889 m solution at 30.°c, if the solute concerned is totally ionized into three ions.
Briefly explain why you can make the assumption that all of the SCN- ion in solutions S2-S6 has been converted to FeNCS^2+ ion.
A red laser pointer emits light with a wavelength of 650 nm. A) What is the frequency of the light. B) What is the energy of 1.00 mole of these photons
Write any assumptions you make. Calculate the total work of this expansion. If this expansion were reversible, what would the value be?
Metabolic regulation is achieved via regulating enzyme activity in 3 ways: allosteric regulation, covalent modification, and enzyme synthesis/degradation
A 10.0 L vessel at 20*C contains butane, C4H10(g), at a pressure of 2.00 atm. What is the maximum amount of work that can be obtained by the combustion of this butane if the gas is first brought to a pressure of 1 atm and the temperature is brough..
What are some of the general properties that distinguish metals
What is the heat change of H 2 O If the final temperature of the mixture = 25 degree celsius?
if 5.0 of nitrogen at 12 degree Celsius and 1.30 atm pressure reacts with the same volume of hydrogen at the same temperature and pressure, what volume of ammonia is obtained at that temperature and pressure?
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