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In New york you had a balloon inflated with helium (He) and you measured its temperature, which was 89.6 degree F, and its pressure, which was 100,000 N/m^2. In Colorado, however, you noticed that the temperature of the He was 69.8 degree F and the pressure was 90,000 N/m^2. (a)Calculate the compressibility factor of He in the two cities. (b) calculate the ratio of He volume in Colorado over that in New york.
Rank the enthalpy of solution from most exothermic to most endothermic. To rank items as equivalent, overlap them.
If a solution of KBr (MM=119.01 g/mol) has a concentration of 2.5 M and a solution density of 1.05 g/ml what is the mass % of the KBr solution
what is the density of a sample of ammonia gas if the pressure is 705 mmHg and the temperature is 63.0 degrees C
Assume that no heat is lost to the surroundings or to the coffee cup itself. Assume that the mass of the solution is equal to the mass of the water.
Consider a galvanic cell that used the reaction: 2 Ag+(aq) + Sn(s) ? 2 Ag(s) + Sn2+(aq). Calculate the potential at 25°C for the cell given: [Ag+] = 0.010 M, [Sn2+] = 0.020 M
Therefore aspartame will have an isoelectric point at a pH between the pKa values of these functional groups. Find the values for these two groups of aspartic acid and calculate a predicted pI value for aspartame.
1. during the titration several milliliters of deionized water are added to the erlenmeyer flask containing the khp
Calculate the amount of N2 gas released (in liters) when the diver returns to the surface of the water where the partial pressure of N2 is 0.80 atm.
which caused the CO2 in the sample to precipitate as BaCO3. The excess base was back-titrated to a phenolphthalein end point with 23.6ml of .0108 M HCl. What is the concentration of CO2 in the air in parts per million? use 1.98g/L for the density ..
The Ksp of AgCl at 25 oC is 1.6 x 10-10. Consider a solution that is 1.0 x 10-4 M NaCl and 1.0 x 10-6 M AgNO3. 1. The solution is saturated.
An empty 10L flask at 1000 C is filled with 4.6 g of NO2 (g), and allowd to come to equilibrium according to the above reaction. Kc = 4.72. what will the total pressure in the flask be once equilibrium is reached?
The recommended adult dose of Elixophyllin, is 6.0 mg/kg of body mass. calculate the dose in milligrams for a 120 lb person.
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