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Question 1. The current population of earth is about 6.5 billion people .Each person on average exhales about 1 kg of CO2 per day. How does this compare with current fossil fuel emission? This amount is not included in inventories of CO2 emissions. Why?
What [OH-] is necessary to start precipitation of Cu(OH)2 in a 0.0014 M copper(II) chloride solution?
In each of the following pairs, which compound would you expect to have the higher standard molar entropy: (a) C2H2(g) or C2H6(g); (b) CO2(g) or CO(g)? Show with appropriate use of degrees of freedom equations.
4.00 ml of a 2.00 x 10^-2 M solution of NaSCN is diluted to 100 ml of solution, what is the molarity of SCN in the solution
Consider what happens when a sample of the explosive TNT is detonated. (a) Is the detonation a spontaneous process (b) What is the sign of q for this process
A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II), [Cu(NH_3)_4]^{2+}. If a standard hydrogen electrode is used as the cathode, the cell potential, E_cell, is found to be 0.076 ..
A saturated solution of MgF2 has [Mg^2+] = 2.6 X 10 ^-4 M and [F-] = 5.2 X 10 ^-4 M. What is the value of Ksp for MgF2
Carbon disulfide (Cs2) is as well a liquid at room temperature with normal boiling as well as melting points of 46.5C and -111.6 C, respectively. How do the strengths of the intermolecular forces vary from CO2, to Cs2, to CSe2. Explain
Calculate the value of ?So in J/K for the combustion of 1 mole of propane to form carbon dioxide and gaseous water. S (C3H8(g)) = 271.3 S (O2(g)) = 203.1 S (CO2(g)) = 212.9 S (H2O(g)) = 188.0
What is the pH of a sulfadiazine sodium solution containing 0.5 M of the drug in 1000 mL of solution?
A catalyst lowers the activation energy of a reaction from 215 kJ to 206 kJ. By what factor would you expect the reaction-rate constant to increase at 25*C? Assume that the frequency factors
Some AgCl(s) has been placed in a beaker of water. After some time, the solubility of Ag+ and Cl- was measured to be 2.5 x 10-5 M. Determine whether the system has reached equilibrium.
chlorine triflouride gas at 708 mmHg and 50 degrees celcius. what is the mass (in g) of the sample?
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