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a. What are the V and T when one mole perfect gas expands isothermally to a final pressure of 0.1 bar from an initial state at SATP?
b. What are the p, V, and T values of the final state of the same perfect gas after an adiabatic expansion to a final pressure of 0.100bar that follows the gas law: PV^(5/3)=constant
If 3.5 mol of C3H8 and 14.0 mol O2 are placed in a closed container and they react to completion (until one reactant is completely used up), what compounds will be present in the container after the reaction and how many moles of each compound are..
How many grams of water are required to dissolve 24g od KNO3 at 100 degrees celsius?
If delta H for the reaction is -851.5 kJ/mol at 25'C, calculate the standard free energy change, delta G for the reaction at 25'C. Calculate the temperature at which the reaction changes from spontaneous to non-spontaneous.
calculate the mass of a sample of gold that occupies 5.0 X 10^-3 cm3 if the density of gold is 19.3 g/cm
Calculate the frequency (in Hz) of light necessary to move an electron in a He+ ion from the n =2 to n =4 energy level. The Rydberg constant for a helium ion is R = 4.390 x 107 m-1
Determine the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency = 1.3 x 10^15 Hz? Express your answer in Joules
An organic compound has a molecular weight of 176.12 amu and was found to contain only three elements, C, H and O. When a 1.0000 g sample was completely combusted in air
How many grams of CH3OH must be added to water to prepare 150 mL of a solution that is 2.0 M CH3OH?
A 35.8-g sample of cadmium metal was melted by an electric heater providing 4.66 J/s of heat. If it took 6.92 min from the time the metal began to melt until it was completely melted, what is the heat of fusion per mole of cadmium?
calculate the minimum energy a photon must have to produce an electron hole pair in an extrinsic semiconductor of band gap 1.3 electron volts.
Semi-Empirical Expression for a Dilute Real Solution, Starting with the definition of osmotic pressure
When 157mg of dipentylamine was added to 122mg of benzoic acid and 2mL of water, a completely homogenous solution was formed. Draw the sturctures of the species present in the water.
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