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Calculate the number of moles of KOH in 9.10mL of a 0.140M KOH solution? What is the pOH of the solution at 25 C?
the equivalence point i know you need to use [A-]= moles of HA/(vol water added+vol NaOH added) and believe moles of HA=5.39x10^-3
The combustion of butane produces heat according to the equation 2C4H10(g) + 13O2(g) -> 8CO2(g) + 10H2O(l) ->H°rxn = -5,314 kJ/mol What is the heat of combustion per gram of butane
If the reaction of 25.0 mL of 1.0 M HBr and 35.0 mL of 1.0 M KOH produces 1.45 kJ of heat, what is the change in entalpy of HBr + KOH per mole of water formed
Why would a mixture of salts be more difficult to identify than a single salt? For example, copper sulfate, barium nitrate and nickel bromide versus only nickel bromide.
What is the magnitude of the change in pH when 1.8 g of NaOH is added to 1.00 L of a solution that is 0.100 M in NH3 and 0.100 M in NH4Cl?
Important information about Chem problem, A 25 mL sample of .13M HCl is mixed with 15mL of .24M NaOH. The pH of the resulting solution will be nearest. The answer is 11.9
The initial temperature of the calorimeter is 20.7oC. If 6g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter?
If a solution contains 0.01M Ca^2+, 0.01 M Zn^2+, and 0.01 M Ni^2+ ions and you want to separate them using aqueous (NH4)2C2O2, which ion will precipitate first as an ozalate, CaC2O4, ZnC2O4, or NiC2O4
a 250.0ml sample of air at 100.0k is warmed to 200.0k at constant pressure. what is the volume of the air sample at the new temperature?
43 kg person drinks 410. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 18% of the energy in milk is converted to mechanical work.
For 1-Chloropropane, draw 3 eclipsed, 2 gauche, and 1 anti conformations. Assume a chloro is the same size as a methyl group.
Calculate the concentration of Cu2+ in a solution prepared by adding 4.9×10^?3mol of CuSO4 to 0.480L of 0.35M NH3.
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