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Calculate total and individual w, q, ?U, ?H, and ?S of an Otto engine operating on stoichiometric ethanol - oxygen gas mixture, with cylinder volume of 1 l and compression ratio of 18:1. Enthalpy of combustion of ethanol(g) is -1371 kJ/mol. Temperature and pressure of intake mixture is 25 oC and 1 bar, respectively. Assume ideal behavior of diatomic gas and ignore the changes in the number of moles of gas during combustion.
Calculate the final temperature when a 24.7 gram sample of ice at 0oC is placed into a styrofoam cup containing 126 grams of water at 78.0 oC. Assume that there is no loss or gain of heat from the surroundings.
Solid ammonium chloride (NH4Cl) decomposes at 500K, forming gaseous ammonia (NH3) and hydrogen chloride (HCl). Given that KP = 6.0 × 10-9, what is the total pressure of the system at equilibrium (in atmospheres)?
A 2.983 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl aqueous solution. To this solution was added 1.910 grams of KI and 50.00 mL of a 0.00894 M KIO3 solution. The excess I3..
Calculate equilibrium concentration of Ag+ in a solution that is initially 0.110M AgNO3 and .870M NH3 and in which the following reaction takes place
Based on the half-reactions and their respective standard reduction potentials below, which addition to an aqueous solution containing Fe(NO3)2 will result in a reaction under standard-state conditions?
Calculate Delta G and Delta A for the vaporization of 1.00 mol H2O at 1.00 atm and 100 ?C. Consider the process reversible. The density of H2O(l) at 100 ?C and 1 atm is 0.958 g/cm3.
How do you figure out how to make a solution of 50mL of 3.6M hydrogen peroxide (H2O2) from 30% hydrogen peroxide
Gaseous C2H4 reacts with O2 according to the following equation: C2H4(g) +3O2(g) --> 2CO2(g) + 2H2O(g). What volume of oxygen at STP is needed to react with 1.50 mol of C2H4
Assuming that N2 obeys the Van der Waal's equation, determine the Boyle temperature of 1 mol of N2 and determine the percent error in the answer knowing that the experimental value of the Boyle temperature
Vibrations: A certain diatomic molecule vibrates with a characteristic frequency v= 2.45x10^9s^-1 (these are microwaves). Calculate the relative population of the ground state and first excited state at 1K.
Cyclohexane can be used as a solvent for freezing point depression measurements. When 1.07 g of naphthalene (MW = 128.17 g/mol) is mixed with 51.29 g of cyclohexane, the freezing point of the resulting solution is 3.29 °C.
calculate the amount of energy in kilojoules needed to change 153g of water ice at -10 C to steam at 125 C.
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