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A liter of a solution saturated at 25 Celsius with calcium oxalate, CaC2O4, is evaporated to dryness, giving a 0.0061 gm residue of CaC2O4. Compute the concentrations of the ions as well as the molar solubility and the solubility product constant for salt at 25 Celsius. Step by step and the balanced reaction
the heat capacity of iron is 0.449 jgmiddotk. a blacksmith is hammering a 261 g horseshoe that has been heated to 1200
Assume also that on a yearly basis the lake is completely mixed, and that the small river flowing into and out of the lake can be neglected as far as acidification is concerned. How many years will it be before the lake will reach a pH of 5.0?
Why would it have been expected for iodine to have emission lines that included all colors of the visible spectrum? explain
Calculate the standard cell potential (E) for the reaction X(s)+Y+(aq) -> X+(aq)+Y(s) if K = 5.33 x 10^-3. Express your answer to three significant figures and include the appropriate units.
What is the change in air temperature(, assuming the heat from the steam is all absorbed by air)
In an electrolysis cell similar to the one employed in this experiment, a student observed that his unknown metal anode lost 0.238 g while a total volume of 84.90 mL of H2 was being produced
Explain the relative trends in acidities of the compounds of the formula HXOn for compounds with identical central atoms, X, but differing values of n
what mass of (NH4)2SO4 must be dissolved in 0.100L of 0.350M NH3 to produce a buffer solution with pH 10.05?
The bitter-tasting compound quinine is a component of tonic water and is used as a protection against malaria. It contains only C, H, N and O. When a sample of mass 0.487 g was burned, 1.321 g of carbon dioxide, 0.325 g of water, and 0.0421 g of n..
Choose all of the processes from below which describe changes which are independent of the path by which the change occurs. the elevation increase experienced by a traveller travelling from Grand Isle, LA to Denver, Colorado
an office heater puts out 2070 btus of energy in the form of heat per hour. how many megajoules of energy in the form
Decomp. of SO2Cl2 is first order and has a rate constant of 1.42x10^-4 S^-1. What is the half-life for the reaction. How long will it take to decomp 27.3% of its initial cocentration
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