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Liquid nitrogen has a density of 0.808 g/mL at -196 C. If 440.0 mL of LN2 is injected into a weather balloon to inflate it, what is the final volume of the balloon at 0.96 bar and 20 C?
A buffer contains 0.15 mol of propionic acid C2H5COOH and 0.13 mol of sodium propionate C_2 H_5 COONa in 1.20 L.
A certain substance has a heat of vaporization of 69.66 kJ/mol. At what Kelvin temperature will the vapor pressure be 4.50 times higher than
An unknown metal hypochlorite salt, M(ClO)2, is subjected to analysis by iodometric titration: the salt is dissolved in dilute sulfuric acid, treated with excess aqueous KI,and then titrated with Na2S2O3. The unknown metal ion(M2+)
Kc for this reaction is 5.1 at 400 degrees C. Calculate the equilibrium concentrations of the four gases if the initial concentration of each of them is 0.050M.
What volume of O2 at 798 mm Hg and 39 degrees celsius is required to synthesize 19.0 mol of NO
the instrument response S for each of the five solutions, measured with a colorimeter, was found to be 0.240, 0.437, 0.621, 0.809, and 1.009, respectively. What was the concentration of Fe3+ in the water sample?
Enough of a monoprotic acid is dissolved in water to produce a 1.59 M solution. The pH of the resulting solution is 2.88. Calculate the Ka for the acid. Ka=?
a quantity of 2.00x102 ml of 0.862 m hcl is mixed with 2.00x102ml of 0.431 m baoh2 in a constant-pressure calorimeter
Calculate the delta G at 400K for the following phase change: Sulfur(monoclinic) to sulfur rhombic. Do not assume that delta H or delta S are independent of temperature
acetaminophen the generic name for tylenoltm consists of carbon hydrogen nitrogen and oxygen atoms. a student in an
A white solid, soluble in water and alcohol but not in toluene, does not melt when heated to 250°C. However, upon prolonged heating of the solid a colorless gas evolves and the amount of solid "shrinks". The solid appears in the list of pure subst..
consider a cup of coffee that has a temperature of 93oc. assume the mass of the coffee is 550 g and that the specific
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