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If the reaction between iron (III) ion and thiocyanate ion yielded an equilibrium concentration of .30 M for each of these ions, what is the equilibrium concentration of the red iron (III)-thiocyanate complex?
Use the Henderson-Hasselbalch equation to calculate the pH of a solution that is 14.5 g of HF and 23.0 g of NaF in 125 mL of solution.
Whats the melting point would be if you mixed acetanilide with 10 % by weight of naphthalene(acetanilide mp 113.5-114; naphthalene 80-82)
Assuming that the solution volume remains constant at 125mL. find the molarity of the final KBr solution?
An oil bath maintained at 50.5oC loses heat to its surroundings at the rate of 4.68 kJ/min. Its temperature is maintained by an electrically heated coil with a resistance of 60 operated from a 110 V line.
1-buytyl bisulfate may serve as teh precursor to an ether and an alkene as well as the desired 1-bromobutane. provide
Explain whether or not each coefficient is significantly different from zero.
Estimate the enthalpy change for the combustion of one mole of ethanol (C2H5OH) using average bond dissociation enthalpies (in KJ/mol) for C-?H: 413, O-?H: 463, C-?O: 358, C-?C: 154, C=O: 122, and O=O: 498.
A 25.0 g sample of garden compost was analyzed for chloride content. The sample was dissolved in water and the chloride was precipitated as silver chloride. 1.58 g of dried precipitate was obtained. Calculate the percent chloride in the sample
The concentration of an enzyme within a cell is extremely low realtive to other material present, yet functions effectively in its metabolic rate. How can enzyme function and never seem to run out?
Liquid methanol can be used as an alternative flu in pickup and SUV engines. An industrial method for preparing it uses the catalytic hydrogenation of carbon monoxide
When the pH of a solution is 2 units lower than the pKa of the buffer in the solution, the conjugate base/weak acid (A-/HA) is Enter a number only (no scientific notation please).
the resulting solution exerts an osmotic pressure of 829 torr. what is the molar concentration of the solution? how many moles of solute are in the solution? what is the molar mass of the solute?
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