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a. If the transmittance of a sample is 42% what is the absorbance? b. calculate the absorbance of a sample which contains a compound with a molar absorptivity of 800 M^-1 cm^-1. The concentration of this compound in the sample is 0.000030 M and the path length of the sample is 1.0 cm
A solution was made by taking 1.250g of KMnO4 and dissolving it in enough water to make 1.000 liter of solution. This solution was used to titrate H2C2O4·2H2O, a very pure substance. In acidic media, the reaction is.
Calculate the pH of each of the following solutions. (a) 0.500 M HONH2 (Kb = 1.1 10-8) (b) 0.500 M HONH3Cl
If a car has an EPA mileage rating of 30 miles per gallon, What is this rating in km L-1? 1 liter = 1 dm3, 1 gallon = 3.785 liter, 1 mile = 1.609 km.
Help me understand specifically why the dissociated phosphate ion would prefer to bond with cations like Al and Zn. I think I know why but help me better understand.
Determine what is the density of the oxygen gas in the full bottle If A cylindrical gas lecture bottle has internal dimensions of 18.0 cm in diameter and a height of 49.0 cm and weighs 1.75 kg when empty.
A foul-smelling gas produced by the reaction of with was collected, and a 1.00 sample was found to have a mass of 1.52 at STP. What would be the formula.
Fundamentals of chemistry - The conditions under which gases behave most ideally and Under the Bronsted?Lowry definition a base
What is the wavelength of a photon of electromagnetic radiation having a photon energy of 4.56X10^-19 J? Report your answer in nanometers, to the correct number of significant figures.
The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name and origin imply, it stinks!
The equilibrium constant, Kc, for the following reaction is 7.00E-5 at 673 k. Calculate Kp for this reaction at this temperature.
A sample of sodium reacts completely with 0.426 kg of chlorine, forming 702 g of sodium chloride. What mass of sodium reacted?
If 56.4 mL of BaCl2 solution is needed to precipitate all the sulfate ion in a 748 mg sample of Na2SO4, what is the molarity of the solution?
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