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What is the approximate pH of a solution of the salt NH4(O2CCH3) Ammonium Acetate? No calculations, only reasoning needed. Ka=7×10^-7 pH is approximately independent of concentration formthis solution.
What mass of NaN3(s) must be reacted in order to inflate an air bag to 74.6 L at STP?
What is the concentration of an unknown water sample if the assumed resistance is 650ohms?
The protein needs to be in 1X buffer and in a total volume of 0.100 mL. You are given a 5mg/mL protein solution, a 20X sample buffer, and distilled water. How much of each wuld you mix together to make the required volume?
A mixture of 4.0 mol of H2 and 2.0 mol of O2 is placed in a sealed evacuated container made of a perfect insulating material at 27C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.
determine the empirical formula of a substance (Vanillin) that contains 63.15% carbon, 5.30% Hydrogen, and 31.55% oxygen.
Calculate the amount of work done against an atmospheric pressure of 1.00 atm when 500.0 g of zinc dissolves in excess acid at 30.0°C. Zn(s) + 2H+(aq) → Zn2+(aq) + H2(g)
Calculate the rate of Fe2 O3 production (kg/min) in the outlet solid stream, and the total molar flow and composition of the outlet gas stream.
A sample of oxygen occupies 10.0 L at 4.00 atm pressure. At what temperature will the pressure equal 3.00 atm if the final volume is 8.00 L.
This is a fact that Bromine(Br) is larger than chlorine(Cl) but indication of equilibrium constant suggests that a bromo substituent has a less preference for the equatorial position than chloro substituent? Explain it briefly?
Crystalline solids are well-ordered arrays of atoms or molecules. Crystalline solids may be metallic solids, molecular solids, or ionic solids.
Calculate the standard Gibbs energy and the equilibrium constant at 298 K and 400 K for the reaction, PbO(s) + CO(g) = Pb(s) + CO2(g).
We have a solution that is in equilibrium with solid Ag2SO3 (ksp=1.5x10^-14), and buffered at pH=8.00. The sulfite anion (SO3(2-)) is the conjugate base of the bisulfite anion (HSO3-), Calculate the concentrations of all chemical species present i..
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