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Question: A 0.10 M solution of lactic acid, a monoprotic acid of formula HC3H5O3, was found to have a pH of 2.43. What is the value of Ka for the acid and the percent ionization?
An empty Erlenmeyer flask weighs 215.7 g. When filled with water (d = 1.00 g/cm3), the flask and its contents weigh 515.4 g.
The flow rate of a process stream of hydrogen at 50 degrees celcius and 1800 mmhg, and the value read from the calibration chart is 350 cm^3/s. Calculate the true volumetric flow rate of the gas.
What is the molarity of NaCl in Sea water if sea water is 15.0% (m/m) and the density of sea water is 1.18 g/mL
Determine the empirical and molecular formulas of Ibuprofen has 75.69% C, 8.80%H and 15.51%O by mass and has a molar mass about 206g/mol.
What is defined as the number of atoms surrounding an atom in a crystal lattice and indicate how tightly the atoms
A mixture is prepared by adding 22.7 mL of 0.157 M Na3PO4 to 31.2 mL of 0.277 M Ca(NO3)2. (a) What mass of Ca3(PO4)2 will be formed? (b) What will be the concentrations of each of the ions in the mixture after reaction?
If all of the electron groups around a single central atom are bonding, and the same outer atom is bonded to the central atom in each case, is the molecule polar, nonpolar, or does it depend on the identity of the outer atom?
How many moles of CS_2 are produced if 6.85 mol C and 2.95 mol SO_2 are reacted together
Converting liquid water to solid ice releases 1.44 kcal/mol. How many kilocalories are released by freezing 2.5 mol of H2O? How many kilocalories are released by freezing 32 g of H2O.
If I add enough water to the above buffer to make the total volume 1.00 L, what's the new pH. How many milliliters of 0.25 M HCl will be needed to change the pH of the dilute buffer by 1 pH unit
NaBr + H2SO4 ---> HBr + NaHSO please descride the mechanism for SN2 reaction in the equation
calculate the amount of sodium nitrate in mg in one liter if 3.8mg of nitrate was detected in one liter of water.
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