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Complete and balance the following redox reaction reaction under basic conditions: PO3^3-(aq)+ MnO4^-(aq)→ PO4^3-(aq)+ MnO2(s)
If DG0 = 98.5 kJ/mol for the chemical reaction in the previous problem at T = 25 °C, what is the equilibrium constant K at this temperature?
How much heat must be absorbed by 20.5 g of CaCO3 to convert it completely to CaO? (Hint: Ho is giving you the KJ/mol of CaCO3 converted to CaO.)
How many moles are in 2.00 g salicylic acid?, what is mass of 5.00ml acetic anhydride if the density is 1.08g/ml?,how many moles of acetic anhydride are in this mass?, starting with 2.00g of salicy
The complex [Ni(NH3)6]2+ has a ligand field splitting of 209 kJ·mol-1 and forms a purple solution. What is the wavelength and color of the absorbed light?
When (2R,3R)-2-phosphoglycerate-3-d was used as the substrate, the E-isomer of phosphoenolpyruvate-3-d was produced. Is the stereochemistry of elimination syn or anti? Explain why?
A gas has a volume of 590mL at temperature of -55.0C what volume will the gas occupy at 30.0C .
Toluene (C6H5CH3) is a liquid compound similar to benzene (C6H6). Calculate the mole fraction of toluene in the solution that contains 113 g toluene and 42.0 g benzene.
Assume that patient blood lead levels are 0.600 mg/L that total blood volume is 5.0 L and that 1 mol of succimer binds 1 mol of lead. What minimum mass of succimer in milligrams is needed to bind a
An electrolytic cell is set up with Cd(s) in Cd(NO3)2(aq) and Zn(s) in Zn(NO3)2 (aq).Initially both electrodes weigh 5.00g. After running the cell for some time the electrode in the one half-cell we
Dilute solutions of NaCl, Na2SO4, and Na2S are available to separate the positive ions from each other. In order to effect separation, the solutions should be added in which order?
What is the enthalpy change when 40.1 mL of 0.400 M sulfuric acid reacts with 19.5 mL of 0.133 M potassium hydroxide?
What mass of lithium is required to react completely with 57.6 mL of N2 gas at STP?
Why is R2 important for a reliable standard curve? What would you consider to be an acceptable correlation>0.85?>0.95?>0.985?.
Calcualte the density of oxygen gas at 75.0 Celsius and 867mm Hg.
calculate the mass and volume of 150 mmol of 2-metylcyclohexanol as well as the theoretical and percent yields if you were to perform a dehydration of 150 mmol of 2-methylcyclohexanol and you obtain
What volume and mass of steam at 100degrees celsius and 760 torr would release the same amount of energy as heat during condensation as 65.5 cm(cubed) of liquid water would release during freezing?
A coordination complex in which the ligands exhibit an octahedral geometry about the central metal ion has the formula, [CoCl2(NH3)4]. How many geometric isomers of this compound should exist?
A 4.98 g sample of aniline (C6H5NH2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ/°C. If the temperature rose from 29.5°C to 69.8°C, dete
The letters TC and TD on volumetric glassware indicate whether it is calibrated to contain or to deliver a given volume.
Calculate the pH of stock sodium acetate solution, given the concentration is 0.9727 mol/L.
A sample of natural gas at 670mmHg contains 85% methane 10%ethane and 5.0% propane. What are the partial pressures of each gas in this mixture?
Compare the pH vs. volume curve for HCl and acetic acid. Discuss any differences in the shape of the curves. Compare these two curves to one of the curves prepared for the unknown.
What concentration of NH3 is needed to lower the Cu2+(aq) to 6.4 x 10-14 M in a solution that was originally 1.43 x 10-4 M in Cu2+(aq)? Assume that there is no volume change as NH3 is bubbled throug
0.791 g acetone reacted with 1.044g benzaldhyde to produce experimentally 1.00 g dibenzalacetone. Calculate the theoretical and percentage yield