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NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.041 M in NH4Cl
How many milliliters of .200 m NaOH are needed to neutralize 100.ml of .100 m HCl
What is the mass of a piece of aluminum if it required 857 J of energy to raise the temperature by 34.5 degrees C?
How many moles of I3-are produced if 25.00 mL of 0.0200 M KIO3 is mixed with 3.00 grams
A sediment sample of clay was equilibrated with ammonium ion (NH4+). The ammonium ion was then displaced with Na+. The total amount of ammonium that had been adsorbed.
The enthalpy of combustion of acetylene C2H2 is C2H2(g) + 5/2O2(g) ->2CO2(g) + H2O(l) H°rxn= -1299 kJ Calculate the enthalpy of formation of acetylene, given the following enthalpies of formation H°f[CO2(g)] = -393.5 kJ/mol ,H°f[H2O(l)] = -285.8 k..
Draw the following peptides, AND indicating the amide bonds that are formed through the side chains. What are the pKa values of the various groups on the peptide?
What is the most important attractive forces (London dispersion, dipole dipole, hydrogen bonding) and the number of bonding domains
An electric power station annually burns 3.6 107 kg of coal containing 1.8 percent sulfur by mass. Calculate the volume of SO2 emitted at STP.
How many moles of NaOH would be required to completley neutralize 37.22mL of 0.25M HCl.
the water solubility of L-alanine is 127g/L at 25 degrees celsius, what is the water solubility of D-alanine at 25 degrees celsius?
Octane has a density of 0.692g/mL at 20 ^ C. How many grams of O2 are required to burn 1.10gal of C8H18.
In biochemistry laboratories, solutions of sucrose (table sugar, C12H22O11) are used in high speed centrifuges to separate the parts of a biological cell.
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