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A sample of a mixture of CaC2O4 and MgC2O4 was dissolved in about 100 mL of aqueous acid. One half of the solution was titrated with 15.05 mL of 0.1000 M KMnO4 to the end point.
MnO4 + C2O4 = Mn + CO2 (unbalanced)
The other half of the solution was titrated with 27.40 mL of 0.1000 M EDTA to the faint pink murexide indicator end point which only titrates the calcium ions. Calculate the mass percentage of the original sample that was CaC2O4.
Calculate the amount of Pd that can be electroplated from a solution of Pd(II) ions with a current of 1.40 amps for 3.00 hours.
If you used 8400 kilojoules you expend in energy in one day to heat 50,000 g of water to 20 degrees C, what would be the irse in temperature? What would be the new temperature of the water?
The density of the hydrogen peroxide solution is 1.01 g/ml and the solution contains 3.40% H2O2 by mass. The vapor pressure of water at 24 celsius is 22mmHg. Based on this data and information calculate the molar volume at STP.
Water (H2O) methyl alcohol (CH3OH ethyl alcohol (CH3CH2OH), ethylene glycol (HOCH2CH2OH), and sucrose (C12H22O11) are commonly classified as
according to the following pKa values listed for a set of acids, which would lead to the strongest conjugate base?
FOr the balanced equation shown below, how many moles of Fe3O4 will react with 1.02 moles of CO, to form how many moles of FeO
When the flask is allowed to cool the vapor condenses and aire again refulls the flask. Re weighing the flask and figure out the the wight of the unknown vapor which filled the flask during the boiling. Is the error in volume measurement or the err..
Label each of the following reactions as exothermic or endothermic ("exo" or "endo"), and according to whether work is done on or by the system, or no work is done at all ("on", "by" or "none")
We can measure the concentration of HCl solution by reaction with pure sodium carbonate: 2H^+ +Na_2CO_3 -->2Na^+ +H_2O + CO_2. Complete reaction with 0.9674 + and - 0.0009g of Na_2CO_3 (FM 105.9884 + and - 0.0007) required 27.35 + and - 0.04 mL of..
Three compounds, hexane, heptane, and an unknown molecule were separated using gas chromatography. The adjusted retention times were 10.4 min for hexane,
The Coal is fed with 200% excess water ( excess is calculated with respect to CO formation) 100% of coal is consumed. the selectivity to CO (with respect to CO2) is 1:1 the functional conversion of the CO is 50% what is the final gas composition? ..
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition
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