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Question- What is the pressure (in Torr and atm) exerted by 0.331 moles of gas Argon, when the sample is contained in a flask whose volume is 400mL and whose temp. is 20 C?
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How many grams of ethylene glycol (C2H6O2) must be added to 1.10 kg of water to produce a solution that freezes
For 2.25 moles of an ideal gas, Pext=P=200x10^3 Pa. The temperature is changed from 122 C to 28.5C and Cv=3R/2. Calculate the q, w, delta U and delta H for an isochloric process.
Problem- 1) Which of the following elements would you expect to form mainly covalent bonds. Oxygen, Potassium, Phosphorus, Iodine, Hydrogen, Cesium
Starting with a tube of these 2 complexes in equilibrium with one another that is purple in color, describe what will be observed after the following manipulations.
Question- Upon the addition of water, As2O3 is converted to H3AsO3. During the titration H3AsO3 is oxidized to H3AsO4 and MnO_4^- is reduced to Mn2+.
the equilibrium constant kc for the reaction has the valueof 4.00 at 500k. if a mixture of 1.00 mol co and 1.00 mol
once leaving the cylinder a regulator reduces the pressure to 15.0 psig and a valve allows 1.000 mls of ethylene at
Assume that you have an aqueous solution of an unknown salt. Treatment of the solution with dilute BaCl2, AgNO3, and Cu(NO3)2 produces no precipitate. Which of the following anions might the solution contain
A woman requires taking ibuprofen twice daily in 625mg amount. Each pill in the bottle is 250 mg then determine the number of pills the woman requires to consume each time she needs 625mg dosage
Choose the correct Lewis electron-dot symbols that depict the monatomic ions formed from each of the reactants, and predict the formula of the compound the ions produce.
what is the minimum number of kilojoules needed to change 40 grams of water 100 c to stem at the same temperature and
When a Group III unknown was treated with an aqueous ammonia/ammonium chloride and ammonium carbonate, a white precipitate was produced.
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