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Calculate the molar solubility of MnS in a 0.32 M NH4Cl- 0.50 M NH3 buffer solution that is saturated with H2S ([H2S]=0.10 M). Kspa for MnS is 3*10^10.
What are the mass and mole fraction of all components in the mixture? What is the average molecular weight of the mixture?
A balloon 15m in diameter is inflated with helium at 20 degrees Celsius. How much work is done during inflation against an external pressure 1atm.
Calculate so for cooling 1.00 mol of Ne from 298K to 253K under constant volume conditions using the Sakur-Tetrode equation
With the pure solvent in the light path, the meter reading is 78; with a 0.1 M solution of a solute in the same solvent, the meter reading is 55. The light path is 0.5 cm. Calculate the absorbance, the transmittance, and the molar absorption coeff..
Consider the molecules CsO2, Na2O, K2O2, MgO, and H2O2 and answer the questions below. If there is more than one answer, give both separated by a comma with no spaces. Order doesn't matter.
In one episode of the 1960s television sitcom, Gilligan's Island, the famous professor constructed voltaic cells to use as substitues for their radio's dead batteries.
Calculate the pre-equilibrium concentration of Fe3+(aq) in a solution made by mixing 2.8 mL of 2.010?3 M Fe(NO3)3 and 7.2 mL of 2.010?3 M NaSCN. Assume the final volume is 10.0 mL.
Draw an energy-level diagram for the valence molecular orbitals of CO. Include the relevant atomic orbitals in your diagram. Clearly label each molecular orbitals and fill in the appropriate number of electrons
List and describe briefly the 2 methods which are used by drug companies to discover lead compounds
Consider that there is 26.38 g NaCl in a solution that has a total volume of 1,780 mL with a density of 0.8495 g/mL. A) What is the molarity of NaCl? B)What is the mass/mass %?
Describe what happen to the density of liquid water when its temperature is increased and/or decreased. properly cite your reference source(s) for this information
The rate constant (k) for a reaction was measured as a function of temperature. A plot of ln k versus 1/T (in K) is linear and has a slope of -1.66 10^4 K. Calculate the activation energy for the reaction.
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