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Problem- A 25.0-mL sample of 0.150 M formic acid is titrated with a 0.150 M NaOH solution. What is the pH after 13.3 mL of base is added?
The Ka of formic acid is 1.8 × 10-4.
It is not a question in the book, so I just need the full solution of deriving!
The enthalpy of combustion for propane is -2044 kJ/mol. How many liters of propane (at STP) must be burned in order to convert 431 grams of ice initially at -12°C to liquid water at 70°C?
If you have a sample of 2.5 mol of Fe2(SO4)3, how many mol of sulfate ion do you have
What volume of O2 is needed to react completely with 20.9L of H2 to give H2O if all gases are measured at 25 degrees C and 1atm? The Balanced equation is: 2H2+O2 ----> 2H2O
0.4 grams sample of primary standard Na2CO3 treated with 45mL of dilute perchloric acid. Solution boiled to remove CO2 and then the excess HClO4 back titrated with 13mL of dilute NaOH
A sample of hydrogen is collected in a eudiometer at a temp of 23C. If the atm is 735 torr, what is the pressure of the carbon dioxide
what is the molar mass of a gaseous element that Effuses through an opening of a box 1.12 times as fast as argon at the same temperature.
The cranberry juice control is 27% juice when purchased from a local grocery store. Provide the calculations required to prepare the series of standard solutions of cranberry juice
Solubility Constant, Ksp of Reactant, The chemical reaction representing the soluability of AGBr is: AgBr (right and left arrow) Ag^+ +Br^-
How do I know what the theoretical size is? I can make an estimate using the gel electrophoresis and compare the intensity of my pcr band with my ladder to make an estimation but how do I know the theoretical size
The heat capacity of the solid lead oxide is given by:Cp = 44.35 J/K/mol + 1.47*10^-3 T J/K^2 Calculate the change in enthalpy of 3.25 mol of PbO(s) if it is cooled from 750 K to 300 K at constant pressure
You would like to create a reflection grating like the one shown at the right, with an incident angle (θ) of 43 °. Calculate the number of lines per centimeter that should be etched in the grating for each of the following conditions:
Mecury has mp= -38.9 C, a molar heat capacity of 27.9J/(K.mol) for the solid, and heat of fusion =2.33kJ/mol. assuming that the heat capacities dont change with temperature, how much energy (in kJ) is needed to heat 7.5g of Hg from a temperature o..
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