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Predict the equilibrium constant for the 1st reaction given the equilibrium constants for the 2nd and 3rd reactions.
CO2(g) + 3 H2(g) <--> CH3OH(g) + H2O(g) K1 = ?
CO(g) + H2O(g) <--> CO2 (g) + H2(g) K2 = 1 x 105
CO(g) + 2 H2(g) <--> CH3OH(g) K3 = 1.4 x 107
Draw the skeletal structure of all the peptides you can make combining one of each of these amino acids. Show your products in the unionized state and omit any stereochemistry.
1) What is the overall charge state for the tetrapeptide DREAM at physiological pH. The pK values for N-terminal, C-terminal, side chain of asp, arg, glu are 9.0, 3.5, 3.9, 12.5, and 4.1
Silver chloride, often used in silver plating, contains 75.27% Ag.Calculate the mass of silver chloride in grams required to make 4.4 grams of silver plating.
A system comprised of 2.900×10^1 g of Ne(g) cools from 170.0°C to 45.0°C at a constant pressure of 5.5 atm. The molar heat capacity at constant pressure for Ne(g) is 20.80 J K?1 mol?1. calculate q,w,delta E, ANDdelta H
The first step in the citric acid cycle of food metabolism is reaction of oxaloacetate with acetyl CoA to give citrate. Propose a mechanism, using acid or base catalysis as needed. Oxaloacetate + Acetyl CoA ----> Citrate
Write an orbital diagram for the ground state of the Calcium atom. Is this atomic substance diamagnetic or paramagnetic
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.100 M HClO(aq) with 0.100 M KOH(aq). (a) before addition of any KOH
N2H4+3O2----2NO2+2H2O The limiting reagent is O2 how many kg of NO2 are produced from the reaction of 75kg of the limiting reagent.
What are the concentrations of HSO4-, SO42-, and H+ in a 0.27 M KHSO4 solution? (Hint: H2SO4 is a strong acid; Ka for HSO4- = 1.3 10-2.).
A gas mixture composed of helium and argon has a density of 0.853g/L at a 745mmHg and 298K .What is the composition of the mixture by volume?
A buffer solution contains 0.386 M NH4Cl and 0.316 M NH3 (ammonia). Determine the pH change when 0.064 mol HBr is added to 1.00 L of the buffer
Sodium nitrate decomposes upon heating to form sodium nitrite and oxygen gas. This reaction is sometimes used to produce small quantities of oxygen in the lab. How many grams of sodium nitrate must be heated to produce 128g of oxygen?
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