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Assuming that air is 21.0 percent oxygen by volume, what volume of air in liters at 45.0 °C and 793 mmHg would be required to burn 185 g of ethanol (C2H5OH)?
Still on Le Chatelier's principle, Ketones are known to be less reactive in aldol condensations.
From the number if moles of ammonia calculated in part (a - below) determine the number of micrograms of mitrogen per gram of dry soil. Assum you have 2.753 f of soil and all of the ammonia diffused from the soil.
Finding the solubility product - Ksp - of a solution of PbI2, A 1.00 L solution saturated at 25 decrees Celsius with lead (II) iodide contains 0.54 g of PbI2
Nitrogen-13 is used in tracers injected into the bloodstream for positron emission tomography (PET). The half-life of nitrogen-13 is 10.0 minutes. How much time is required for the activity of a sample of nitrogen-13 to fall to 14.2 percent of its..
at 580 nm, the wavelength of its maximum absorption, the complex Fe(SCN)2+ has a molar absorptivity of 7.00 x 10^3 L mol -1cm1-. Calculate
calculate the final concentration of each of the follwing 0.50 l of a 4.0 m hno3 solution is added to water so that the
A dilute aqueous solution of PtCl4 is pale yellow to colorless, however a concentrated solution is deep red. Explain what explanation can you give for this behavior
What would the absorbance readings be for the acid and base forms of methyl red indicator at the acid wavelength? At the base wavelength?
From a thermo standpt, at NLC what principal products are expected from a rxn mix consisting of ~1 mol Al(NO3)3(s) w. ~1 mol Na2CO3(s) in ~2 L of DIW? Defend/explain your response.
for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 425mL of a solution that has a concentration of Na+ ions of 1.50M?
At a given temperature,0.0500 mol NO, 0.200 mol Cl2, and 0.550 mol CINO were placed into a 1.00 L container. The equilibrium below was established and 0.250 mol of CINO is present. Determine the equilibruim constant (Kc).
A hard water sample contains 0.0085% Ca by mass (in the form of Ca2+ ions). What mass of water contains 1.2 g of Ca
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