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A solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point and 5 mL past the equivalence point. how much is 5 mL past? i do not know how to do it?
A powder contains FeSO4·7H2O (molar mass = 278.01 g/mol) among other components. A 3.585-g sample of the powder was dissolved in HNO3 and heated to convert all iron to Fe3
What is the solubility of MnS, in grams per liter, in a buffer solution that is 0.115M HC2H3O2 - 0.500M NaC2H3O2 ? For MnS, Kspa=3x10^7
2C4H10(g) + 13O2(g) 8CO2(g) + 10H2O(g) Explain how many moles of oxygen are needed to react completely with 14.73 moles of butane
A 5.00 mL standard phosphate solution containing 45.0 mg of phosphate per liter is added to a second 2.00 mL sample and diluted to 100.0 mL. The absorbance of this solution is 0.506 at 700 nm. Calculate the concentration of phosphate in the origin..
How many moles of methane are produced when 82.6 moles of CO2 gas react with excess hydrogen gas? CO2+4H2----->CH4+2H2O I am having problems trying to set this problem up correctly, any help would be appreciated
Determine the vapro pressure ( in mmHg ) of a substance at 29*C, whose boiling point is 76*C and has a changeHvap of 38.7 kj/mol.
An enzyme reduces the activation energy of a reaction at the temperature of 25 degree celsius from 55 kjmol-1 to 15kJ mol-1 by changing the route of the reaction.
For a particular redox reaction NO(2)^- is oxidized to NO(3)^- and Ag^+ is reduced to Ag. Complete and balance the equation for this reaction in a basic solution
Calculate Delta H kJ/mol NH4NO3 for the solution process. NH4NO3 ( s) yields NH4 (there is a plus sign above the four)(aq) + ^ + NO3(negative sign above the three) (aq)
The flue gases then pass through a heat exchanger from which they emerge at 323.15K per mol of methane, how much heat is lost from the furnace, and how much heat is transferred in the heat exchanger
A gas was enclosed in a rigid-walled container. The initial temperature and pressure were 52°C and 0.55 atm, respectively. If the final pressure were 2.41 atm.
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?
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