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(a)What are the signs of ?S and ?H for the process depicted here ?G?
(b) How might temperature affect the sign of?
(c) If energy can flow in and out of the system to maintain a constant temperature during the process, what can you say about the entropy change of the surroundings as a result of this process?
For the reaction 3 C2H2(g) C6H6(l) at 25C, the standard enthalpy change is -631 kJ and the standard entropy change is -430 J/K. Calculate the standard free energy change at 25C.
The initial concentration of a reactant in the first order is .28M. The rate constant for the reaction is.75s^-1. What is the concentration of the reactant after 1.85s?
For a fair comparison, let the current source I = VDD/RD, which is the initial current available to charge the capacitor in the case of a resistive load. Find tPLH for each case, and hence the percentage reduction obtained when a current-source lo..
when 20.6gm of methanol and 39.7gm of chlorine under go reaction that has 73.3% yield, what mass of chlormethene CH3Cl forms
What is the final concentration (in molarity) of the sodium acetate and the acetic acid. Prove that the student has correctly calculated the volume of sodium acetate that she needs.
The flask was then shaken until the solution was uniform. A 45.0 \rm mL sample of this glucose solution was diluted to 0.500 \rm L. How many grams of glucose are in 100. \rm mL of the final solution
nh4no3 decomposes according to the equation...2nh4no3 s ---gt 2n2 s o2g 4h2o gwhat pressure in torr will develop in a
The vapor pressure of pure acetone (propanone) is 266 torr. When a non-volatile solute is added, the vapor pressure of acetone above the solution falls to 232 torr. What is the mole fraction of the non-volatile solute in the solution?
0.526 g sample of a compound containing only C and H was burned, and 1.78 g of CO2 and 0.364 g H2O were obtained. What is the empirical formula of the compound
Although the use of absorbances at 450 nm provided you with maximum sensitivity, the absorbaces at, say, 400 nm or 500 nm are not zero and could have been used throughout this experiment. would the same value of K be obtained at one of these wavel..
Calculate the minimum mass of hydrochloric acid that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits.
What mass of O2 does the tank contain. kg (b) What volume would the gas occupy at STP? L (c) At what temperature would the pressure in the tank equal 150. atm
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