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Calculate the Boyle temperatures for carbon dioxide, oxygen, and nitrogen using the van der Waals constants. How close do they come to the experimental values? (CO2 = 713, O2=405, and N2=327)
A student pipetted 10.00mL of 2.50x10-3mol/L iron (III) nitrate solution and then 2.00mL of 2.50x10-3mol/L NaSCN solution into a 25mL volumetric flask and added water up to the mark. From the absorbance of the solution, the concentration of (FeSCN..
Calculate the heat of a reaction if 12.5 g CaCl is dissolved in 105 g of water and the temperature decreases from 22 degrees C to 15 degrees C. Assume the specific heat of the solution is 4.184 J/g degrees C. Is the reaction endothermic or exother..
Calculate the molarity and standard deviation of MnSO4 stock solution using the molarity
Suppose that a gas obeys the modified van der Waals equation P(Vm-b)=RT, and that b has a value of 0.0200 dm^3 mol^-1. If 0.500 mol of the gas is reversibly compressed from an initial volume of 2.00 dm^3 to a final volume of 0.500 dm^3 how much wo..
how many grams of sodium fluoride used in water fluoridation and manufacture of insecticides are needed to form 485 g
A mixture of SO2, O2, and SO3 at 1000 K contains the gases at the following concentrations: [SO2] 5.0 x10-3 M [O2] 1.9 x10-3 M [SO3] 6.9 x 10-3 M Is the reaction at equilibrium
what mass of solid LiOH must be added to 1.0 L of 1.35 M hydrofluoric acid solution in order to create a buffer solution
If 7.50 g of the unknown compound contained 0.250 mol of C and 0.500 mol of H, how many moles of oxygen,O, were in the sample?
Assume ^35^Cl_2_ is a harmonic oscillator( it is slightly anharmonic). If K=329 N/m compute the zero-point energy for this molecule. ^35^Cl= 34.9688g/mol.
A mass of 90 kg sits on top of a piston in a cylinder filled with 1 mole of an ideal gas at 1 atm and 298 K. What temperature change is required to lift the mass 0.1 m.
A saturated solution of calcium hydroxide contains .38 grams of calcium hydroxide in each 250 mL of solution. What is the pH of the saturated calcium hydroxide?
Consider the following balanced thermochemical equation for the decomposition of the mineral magnesite. MgCO3(s) ? MgO(s) + CO2(g) ?Hrxn = 117.3 kJ
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