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A sample of 0.46g He and an unweighed quantity of O2 are mixed in a flask at room temperature. The partial pressure of He in the flask is 75 mmHg, and the partial pressure of O2 is 145 mmHg. What is the mass of O2 in the container?
What is the rate of consumption of O2 in a combustion reaction carried out in a 11.00 L flask if 6.30 mmol of oxygen is consumed in 25.6 s?
A 20L vessel is filled with 1.00 mol of ammonia. NH3. What percent of ammonia dissociates to the elements if equilibrium is reached at 345C
the average osmotic pressure of blood is 12.3 atm at 27 degree c. what concentration of glucose will be isotonic with
Mixtures of helium and oxygen are used in scuba diving tanks to help prevent "the bends". For a particular dive, 18.9 L of oxygen gas at 25.0oC and 1.25 atm, and 7.58 L of helium gas at 25.0oC and 1.13 atm were pumped into a tank with a volume of ..
Is Guanine aromatic? It the C=O bond on top's pi electrons is outside of the ring. I was pretty sure it is not aromatic but I read somewhere that it is.?
what advantage does using the Wiley extractor have over simply pouring acetone over the meat again and again?
What is the concentration of Cu^2+ in the other half-cell? (Assume the concentration in the unknown cell to be the lower of the two concentrations.
The empirical formula of a compound is CH. at 200.0 degrees C,.0.193 g of this compound occupies 97.2 ml at a pressure of .740 atm. what is the molecular formula of this compound
Calculate [OH-] in the following aqueous solution at 25 deg C: [H3O+] = 3.6×10^?2 M? I know you have to divide 1x10^-14 by the 3.6x10^-2 and the answer I got was 2.8x10^-17 but it said my answer is wrong
The reaction A=B+ C is second order in A. when [A}0=0.100M, the reaction is 20% complete in 35 minutes. Calculate the value of the rate constant in ( L/min.mol)
compute the change in temperature when 1.1 g of sodium chloride is dissolved in 300.0 ml of water initially at 26 c.
Calculate the mass of air in an air-filled tire. Part B: Calculate the mass of helium in a helium-filled tire. Part C: What is the mass difference between the two?
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