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What are the Celsius temperatures of the following conditions?
Body temperature, ice freezing, water boiling, room temperature?
Consider preparing a buffer solution by bubbling 0.64 mols of H3N(g) into 250 mL of 1.28 M HONO2. Calculate [H3O+] and pH for this solution. Show all pertinent work including equations for any B/L A/B reactions which occurred on solution preparati..
Divers experience a problem known as the bends when they come up to the surface too fast. Write an essay linking this phenomenon with solubility.
A solution is prepared by dissolving 0.15mol of acetic acid and 0.15mol of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution.
What is the volume in mL of 7.27 g of acetone?
calculate the empirical formula of hydrated ferrous ammonium sulfate feanh4bso4ch2od from the following data.a. 0.7840
Calculate Equilibrium constant, if delta Gf for NH3(aq) is -26.50 kj/mole; for H2O(l) is 237.13 kj/mole;for NH4+(aq) is -79.31 kj/mol; for OH-(aq) is 157.3 kj/mole. How many moles of NH4Cl must be added to 1.0L of 0.10M NH3 to make a buffer whose ..
calculate the volume of 12.9 molar ethanol solution needed to prepare 2 L of 8.12 molar ethanol solution. (i did this by doing MV=MV and got 1.26 L)
How many grams of precipitate will form from 100mL solution that is both 0.90 M in Na2S and 0.20 M in PbCl2?
What proportion of benzoic of benzoic should be used with an equimolar mixture of adipic acid and hexamethylene diamine to produce a polymer of 10,000 molecular weigh at 99.5% conversion?
What is the final pH of a solution that contains 0.1 M of H2N-CH2-CH2-NH3+ Cl- and 0.01 M of Cl- NH3+-CH2-CH2-NH3+. The pKa values of the compound are as follows; pKa1= 7.5 and pKa2= 9.5:
1.25g sample of a benzoic acid with a heat capacity of 25.0kjgwas burned in a bomb calorimeter and the temperature of
The laser pointer emits light because electrons in the material are excited (by a battery) from their ground state to an upper excited state. When the electrons return to the ground state they lose the excess energy in the form of 670 nm photons
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