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A volumetric pipette was found to deliver 5.01 mL of ethanol at 24°C. The mass of the ethanol was measured to be 3.9462 g. What is the density of ethanol at 24°C? Report your answer to 5 significant figures and use only standard units.
What is the smallest amount of CuO (in moles) that would establish the equilibrium?
Given the two reactions: PbCl2 Pb2+ + 2Cl-, K1 = 1.80*10^-10, and AgCl Ag+ + Cl-, K2 = 1.19*10^?4, what is the equilibrium constant K final for the following reaction PbCl2 + 2Ag+ 2AgCl + Pb2+
Determine the angle for the first-order diffraction of xrays with lambda=362 pm, reflected from planes in mica (a silicate mineral) separated by 997 pm
Study the structures of the chlorophylls and carotenoids and predict the relative polarity of each set of pigments below
vinegar is a 5.0% solution by weight of acetic acid (CH3CO2H)in water. given that the ph for acetic acid is 2.41, the ka=1.8X10-5 and assuming the density of vinegar to be 1.00g/cm3, what is the percent dissociation for acetic acid in vinegar?
How many moles of nitroglycerin and how many moles of gas(air, assume no nitroglycerin vapors present)were in the container originally?
Ribonuclease P proteins RPP21 and RPP29 bind one another during complex assembly. Thermodynamic measurements reveal that ΔH° = -66.3 kJ/mol and ΔS° = -73.2 J/mole*K at 40°C. What is the equilibrium constant for the binding reaction at 40°C?
what percent of the fuel consists of the lighter isotope? Assume that the masses of the two isotopes are exactly 235 and 238 amu.
excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.28. What is the Ksp of the salt at 22 °C?
What is the pressure in atmosphere of a gas mixture that consit of 0.2 moles of nitrogen and 0.3 mols of oxygen
A 585 g piece of copper tubing is heated to 97.2°C and placed in an insulated vessel containing 51.0 g of water at 26.0°C.
Fischer projections, isomers, enantiomers and stereocenters, For 2,3-butanediol, there are 3 isomers; 2 are enantiomers, one is not.
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