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Ferrous ion reacts with permanganate ion MnO4 in acidic solution to produce the ferric ion Fe3.
Calculate the molar concentration of acetic acid at equilibrium in an acetic acid solution that is 1.1% ionized.
When a mole of C2H4 is combusted it reacts with 3 moles of O2 to produce CO2 and H2O.
One problem that we will continue to face as the population of the earth steadily increases is fresh water.
What volume of .250 M calcium chloride would be required to precipitate silver chloride if it is mixed with 600.0 ml of 0.650 M Silver nitrate.
Consider two solutions. One solution is 0.1115 M Ca(OH)(2). The other is 0.1050 M HClO(4). Write a balanced equation for the reaction between the two solutions.
If only 2.009g of magnesium hydroxide are obtained, what is the percent yield of the reaction?
How much volume do you need to blend to make the 9.0 g/L Titatrable Acid wine equivalent to 7.2 g/L? What is the final volume of the blend?
An ammonium ion selective electrode responds to both NH4+ and H+, but not to NH3. (pKa=9.244 for NH4+)
5.30 moles of gas, initially at 25 degrees celcius and 5.00 atm pressure, was allowed to expand adiabatically with no heat exchange.
What is the volume of 0.200 M MnO4(-1) solution is needed to titrate 22.5ml of a 0.350M solution fo ethanol.
Draw the Lewis structure for OF2 (small 2 at bottom) What are its electron-pair and molecular geometries?
How long can the electrolysis proceeed before the current at the spherical electrode exceeds that at the planar electrode by 10%?
Buffer solutions have the unique ability to resist changes in PH when an acid or base is added to them.
What is the pH of a solution prepared by mixing 25.00mL of 0.10 M CH3CO2H with 25.00mL of 0.050 M CH3CO2Na?
Calculate the minimum energy a photon must have to produce an electron hole pair in an extrinsic semiconductor of band gap 1.3 electron volts.
State the assumption associated with the model used to develop the Ideal Gas Law.
Magnesium reacts with iron(III) chloride to from magnesium chloride(which can be used in fireproofing wood and in disinfectants) and iron.
It takes 585 J of energy to raise the temperature of 125.6 g mercury from 20.0 degrees C to 53.5 degrees C. Calculate the molar heat capacity of mercury.
A summation equation showing both H+ and OH - in the equilibrium reaction between CrO42- and Cr2O72- ions.
637 atoms of a particular isotope weigh 2.2483 x 10^-19 grams. What is the atomic mass of the isotope?
Calculate the pH at 0, 10.0, 25.0, and 30.0 mL of titrant in the titration of 50.0 mL of 0.100 M NaoH with 0.200 M HCl.
A sample of SO2 gas which weighs 1.50 grams has a volume of 1.40 liters when collected at 45oC. What would be the pressure of the gas sample?
The Standard free energy change for the following reaction is -33.2 kJ/mol and the equilibrium constant Kp=6.59x105 at 25 C.
You and a lab parnter prepare buffers to use in an experiment. Your partner prepares 200 ml 50 mM MES pH 6.0 while you prepare 200 ml of 50 mM.