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For the cell reaction Cu(s) + 2Fe3+ ----> 2Fe2+ + Cu2+ Ecell=0.33V What is the value of the equilibrium constant at 25C for the cell reaction
consider the results of an experiment in which nitrogen dioxide reacts with ozone at 2 different temperatures, 13 degrees Celsius and 29 degrees Celsius. If the activation energy is 29 kI/mol, but what factor does the rate constant increase with t..
Compare the relative greenness of this approach to at least one other extraction method: steam distillation or solvent extraction. List the green chemistry principles that differentiate the two approaches that you compare
Find the molar mass of a gas using the combined gas law if 950. mL of the gas collected over water at 750.0 mm Hg and 21.oC has a mass of 0.905 g
If the sunlight consists of photons with an average wavelength of 510.0 nm, how many photons strike a 3.20 cm2 area per second?
How much energy is emitted when electron in hydrogen atom undergoes a transition from n=5 to n=2 level. what is the wavelength of this emission. what is the frequency
a) how many moles of sulfur are in 23.2 g of (C3H5)2S, b) how many atoms of hydrogen are in 0.75 mol of (C3H5)2S, c) how many grams of carbon are in 4.20 x 10^23 molecules of (C3H5)2S, d) how many atoms of carbon are in 15.0 g of (C3H5)2S
A 0.5220 g sample of an unknown monoprotic acid was titrated with 9.98×10?2 M NaOH . The equivalence point of the titration occurs at 23.70 mL. Determine the molar mass of the unknown acid.
A gas at 439 K occupies 5.98 L at a pressure of 1.38 atm. What will its pressure (in atm) be at 228 K if its volume is reduced to 4.40 L
Determine the value of the solubility-product constant if solubility of T3U2 =4.24× 10-20 mol/L.?
Determine how many grams of aluminum hydroxide will get from 18.2g of aluminum sulfide and determine the density of this newly minted penny
diamond powder (C) and BaCO3, separates the mixtures and recovers 1.75g sugar, 0.86g diamond powder and 2.29g BaCO3(s). Calculate the percent recovery and percent composition if the initial mixture they started with weighted 5.08g
The element chromium is thought to be a cancer causing agent. Chromium in the form of the chromate ion in a water soluble compound presents a risk to humans
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