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A weather balloon has a volume of 450 L when filled with helium at 45oC to a pressure 0.80 atm. What is the new volume of the balloon in an atmosphere where the pressure is 0.025 atm and the temperature is -50oC?
Based on the following chemical equation 2C6H6 + 15O2 12CO2 + 6H2O calculate the number of moles of CO2 that will be produced
Just transfer this solution completely to a flask of 1L volumetric and dilute to exactly 1 liter and then compute the Fe 2+ ion concentration.
Suppose that the solvent ethanol could serve to replace the methanol in this process, but at the expense of double the concentrations of the solvent in the atmosphere.
what is the maximum kinetic energy of a photo electron ejected from cesium by 555nm light? note that if the wavelength of the light used to irradiate the cesium surface become longer than 600 nm, no photoelectrons are emitted.
In a second experiment, I(electric current) broke down a sample of H 2 O into 1.45 grams of hydrogen and 11.51 grams oxygen. Are these results reliable with the law of exact extent?
CaH2(s) + 2H2O(l) Ca(OH)2(aq) + 2H2(g) How many grams of CaH2 (Molar Mass = 42.1 g/mol)are needed to generate 10.0 L of H2 gas if the pressure of H2 is 769 torr at 28.0°C?
Compute the cell potential(E) after the reaction has operated long enough for the [Al3+] to have changed by .60 mol/L. suppose T=25 C
What is the molarity of a nitric acid solution if 43.53 mL 0.1000 M KOH solution is needed to neutralize 20.00 mL of the acid solution
What is the concentration of toluene in air produced by vaporizing 1 ml of liquid toluene into clean air to produce a total volume of 100 liters
Find the activity coefficient of H+ in a solution containing 0.010M HCl plus 0.040M KClO4. What is the pH of the solution?
Calculate the density of propanol C3H8O if you know that there are 1.069×10 25 molecules of propanol in 1.35 L.
What is the expected freezing point of an aqueous solution of 2.62 kg of nitric acid, HNO3 , in a solution with a total mass of 5.91 kg? Assume that the nitric acid is completely ionized.
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