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Calculate the change in entropy (in J/K) when a 44.0 g of nitrogen gas is heated at a constant pressure of 1.50 atm from 19.3 ºC to 86.5 ºC. (The molar specific heats are Cv is 20.8 J/(mol-K) and Cp is 29.1 J/(mol-K) .)
If the colder block originally weighed 200g and the warmer one 100g, calculate the final temperature and the entropy change of the universe for this process.
A first order reaction has an Arrhenius constant for the reaction is 9.4 x 10^10 sec ^-1, and an activation energy of 64.4 kJ. At what temperature (in Celsius) is the rate constant equal to 0.472 sec^-1
How many grams of O2 gas would occupy a 400.0 liter container when the temperature is 300.0 K and the pressure is 2.20 atm?
Consider the titration of 0.1000 M HBr with 0.1000 M KOH. Calculate the pH after 55.00 mL of the base has been added to 50.00 mL of the HBr solution
solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. Write a balanced chemical equation for this reaction.
A system obtains the amount of heat equal to q > 0 from the surroundings at constant volume. Will the internal energy of the system increase, decrease, or remain constant? Will the temperature of the system increase or decrease
How much heat energy, in kilojoules, is required to convert 47.0 g of ice at -18.0 degrees C to water at 25.0 degrees C ?
1 tums tablet is 1.3g which has .5g of calcium carbonate, how many moles of calcium carbonate are in one tums tablet? From that value, calculate the number of moles of HCI that two TUMS tablers can neutralize
what is the delta S in J/K*mole when 1.645 grams of methane (FW=16.04) at 0.1091 atm pressure is compressed by a factor of 8.064 at a constant temperature of 22.81
An electric power station annually burns 3.0 x 10^7 kg of coal containing 2.4 percent sulfur by mass. Calculate the volume of SO2 emitted at STP.
If 132 mL of wet H2 is collected over water at 24°C and a barometric pressure of 736 torr, how many grams of Zn have been consumed?
How many milliliters of 0.270 M Na2S2O2 solution are needed to titrate 2.303 of I2 according to the equation below
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