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A mixture of NaCl and NaBr has a mass of 2.10 g and is found to contain 0.75 g of Na. What is the mass of NaBr in the mixture?
At a certain temperature the equilibrium constant for the subsequent chemical equation is 2.80. At this temperature, compute the number of moles of NO2(g) that must be added to 2.52 mol of SO2(g) in order to form 1.20 mol of SO3(g) at equilibrium.
zinc metal is added to hydrochloric acid to generate hydrogen gas and is collected over a liquid whose vapor pressure
the data below were collected for the following reactioninitial rate0.050 0.050 0.0140.100 0.050 0.0290.100 0.100
sodium carbonate na2co3 is used to neutralize the sulfuric acid spill. how many kilograms of sodium carbonate must be
Driving across Death Valley
What would affect the chemical shift of the sp3 hybridized carbon atom that would cause its peak to appear at ~ 64 ppm in a carbon-13 NMR
2.00 g of salicylic acid (molar mass = 138.1 g/mol) reacts with an excess amount of acetic anhydride. A) calculate the theoretical yield of acetylsalicylic acid (molar mass = 180.2 g/mol) for this synthesis.
To what molecule is the acetyl group of acetyl CoA transferred in the first step of the citric acid cycle?
At the BIG BANG the universe extended from a single point into a sphere of radius about five light years rather quickly. Approximate the entropy raise in the universe during the expansion under two different assumptions
The rate constant for the reaction 2A ? 2B + C is 1.72 M -1min-1. Find the time, in seconds, needed to decrease the concentration of A from2.45 M to 1.22 M.
the first ionization energy of bismuth is erm i1 703 rm kjmol. what is the longest possible wavelength of light that
Derive Eh-pH equations based on the progressive oxidation of Mn to form oxides starting with metallic Mn. b) Plot these equations in coordinates of Eh and pH
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