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(1)- 15.0 mL of 0.400 M Hno3 Solution is titrated with 0.600 M KOH solution . Calculate pH of the solution when12.0 mL of KOH is added ?
(2)- 20.0 mL of 0.25 M of HC2H3O2 is titrated with 0.40 M Naoh, Calculate the pH of the solution after 15 mL NaOH is added. Ka(Hc2H3O2)=1.8x10^-5
Determine how many milligrams of H 2 O are present in sample If the freezing point of 100.0 grams of sample of 2-methyl-2-propanol =24.59C, (2methyl-2propanol has Kf=4.68Ckg/mol
Write a mechanism for the reaction of an alkyl halide with alcoholic silver nitrate which demonstrates the type of substituition which occurs. Explain how this mechanism accounts for the relative rate of reactivity for 1 degree, 2 degree and 3 deg..
calculate the volume in mililiters (mL) of 6 M NaOH needed to make 500 mL of a 0.100 molar (M) NaOH solution.
The titration curve of a 1.00 M unknown acid solution shows that the pH at the equivalence point is 9.16 and the pH halfway to the equivalence
A student added 5.85g of KMnO4 to a beaker containing 150ml of 0.200 M KMnO4 solution. Calculate the molar concentration of the final solution. Assume volume remains constant.
Assuming that the total pressure of the gases is 1.52 and that their mole ratio is 94 : 4.0 : 1.5 : 0.50, calculate the partial pressure (in atmospheres) of each gas.
How many moles of H+ ions are present in 1.9 L of 0.48 M hydrobromic acid.
What is the pH of a buffer that results when 0.50 mole of Na3PO4 is mixed with 0.75 mole of HCl and diluted with water to 1.00 L? The acid dissociation constants for phosphoric acid
4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g) In a certain experiment, 4.30 g of NH3 reacts with 7.48 g of O2. Which is the limiting reactant?
A gas mixture contains helium and oxygen at partial pressures of 255 torr and 0.450 atm.What is the total pressure in mmHg of the mixture after it is placed in a container one-half the volume of the original container? (Temperature remains constan..
70g of ice at 0 degrees celcius. is added to 355mL of water at 25 degrees celcius. Find the final temperature of the water when the ice is fully melted
How many moles contain each of the following? 3.75 x 10^24 molecules CO2
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