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Four (4.00) moles of a perfect gas at 250.0 K and 1.50 bar pressure undergo a reversible isothermal compression until the pressure becomes 3.00 bar. Calculate: q, w, U, H and S?
If a solution containing 17.76 g of mercury(II) perchlorate is allowed to react completely with a solution containing 5.102 g of sodium sulfate.
Using a sample of a compound containing only oxygen and chlorine reacts with an excess of H2 gas to give 0.206 g water and 0.278 g HCl . ClxOy in presence of H2 (g) → HCl + H2O all the oxygen
Calculate the volume of a balloon at the final temperature if this balloon at temperature of 279K and an initial volume of 2.3L is warmed to 406K.
Cesium(Cs) is used extensively in television cameras and in photocells because it has lowest ionization energy of all the stable elements.Determine the maximum kinetic energy of a photo electron ejected from cesium.
compute the enthalpy change, (Delta H), for this reaction per mole of A. suppose that the specific heat =[4.18J/(g*Degrees C) and density=1.00(g/mL)?
To determine the number of molecules present in air using the ideal gas law and Avogadro's number - how many molecules of each type of gas are present in 1.0 L of air at STP?
Determine the volume of the gas at a pressure of 150.0 kPa and a 26 degree Celsius of temperature?
Determine the mass of sodium phosphate that yields 1.00 g of calcium phosphate precipitate.
9.780 grams of gaseous mixture contains ethane ,C2H6 and propane ,C3H8. it needs 1.120mol of oxygen when complete combustion to form CO2 and H2O. Compute the mass percent of C2H6 in the original mixture.
What is the molar mass of this substance, express your answer in g/mol and determine the moloar concentraitions Cr 2 O 7 ^2 and of K + ?
How much 0.20mol/L sodium hydroxide should be combined to this buffer to raise the pH to 5.1? If the same amount of 0.20 mol/L sodium hydroxide were combined to 250mL of deionized H 2 O, Determine New pH?
You use a properly calibrated explosimeter to measure the flammable hazard inside a tank that contained toluene and may still have some residual product a. inside.
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