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What is the density of a sample of brass if the sample has a mass of 26.27 g and a volume of 3.07 cm3?
The activation energy for the following reaction is 60. kJ/mol. Sn2+ + 2Co3+ → Sn4+ + 2Co2+ By what factor (how many times) will the rate constant increase.
What is the pH of a solution that results from mixing together equal volumes of a 0.110 M solution of acetic acid and a 0.0550 M solution of sodium hydroxide
Propose a structure for an amine of formula C4H9N, which liberates a gas when treated with NaNO2 and HCl. The 13C NMR spectrum is as follows
Question- Consider the following reaction: I2(g)+Cl2(g) ? 2ICl(g) Kp= 81.9 at 25 ? C. Calculate ?Grxn for the reaction at 25 ? C under each of the following conditions. Part B at equilibrium Part C PICl= 2.57atm ; PI2= 0.324atm ; PCl2= 0.219atm .
Use the van der waals equation and data in the text to calculate the pressure exerted by 18 gram of H2 at 20C in a 1.00L container. Repeat the calculation assuming that the gas behaves like an ideal gas.
explain the major departure of the marginalist school from the classical political economists. how did it change the
Calculate the change in enthalpy, Delta H. Report your answer in Joules.
The foul air power and light company has been ordered to remove sulfur dioxide from its smoke stacks. Management decides to pass the gas over solid calcium oxide thereby forming solid calcium sulfite.
The lattice energies of FeCl3, FeCl2, and Fe2O3 are (in no particular order) -2631 kJ/mol, -5339 kJ/mol, and -14,774 kJ/mol. Match the appropriate formula to each lattice energy.
Draw a picture of the following cell and write reduction half-reactions for each electrode.Pt(s)|Fe3+ (aq),Fe2+(aq)||CrO72-(aq)|Cr3+ (aq),HA(aq)|Pt(s)
The entropy change for this process is given by ΔS = nR ln (vf/vi) = nR ln 2. Now suppose 1.00 mol of an ideal gas expands isothermally at 300 K against a vacuum from 10.0 L to 20.0 L. Since the expansion is against a vacuum, w = 0
Solve an equilibrium problem (using an ICE table) to calculate the pH of a solution that is 0.185 M in HC2H3O2 and 0.120 M in KC2H3O2
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