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We need to make a 4% NaOH solution in ethanol. How much NaOH do we add to 50.0 mL of ethanol to make a 4% NaOH solution. Density of Ethanol=0.789 g/mL molar mass= 46.06844 g/mol and NaOH molar mass= 39.997 g/mol
Calculate the volume of O2 at STP required for the complete combustion of 4.23 L of acetylene (C2H2) at STP.
Compare the amount of .200 moles of KOH needed to neutralize 50 mL of .200 moles of HNO3 with the amount of .200 moles of KOH needed to neutralize 50 mL of .200 moles of CH3COOH. Is the volume of KOH more, less or the same.
The solubility of barium fluoride, BaF2, is 3.15 x 10-3 M at 25 °C. Calculate the solubility product, Ksp, of both compounds.
the liberated CO2 was collected on calcium oxide and found to weigh .0515g. Calculate the percentage of aluminum in the sample
Given the values of Ka and Kb below, which of the systems given would be most suitable to use to construct a buffer of pH 9 and WHY
calculate the volume, in liters, of each of the following solutions that provides the given amount of solute: a)5.00 mol of NaOH from a 12.0 M solution. b)15.0 g of Na2SO4 from a 4.00 M solution. c)28.0 g of NaHCO3 from a 1.50 M solution.
A 11.0-L helium tank is pressurized to 26.0 atm. When connected to this tank, a balloon will inflate because the pressure inside the tank is greater than the atmospheric pressure pushing on the outside of the balloon.
Calculate the mass of reagents required to prepare 100 mL of a 275 mM solution of monobasic phosphate and 100 mL of a 275 mM solution of dibasic phosphate, each containing 2.75 mM MgCl2
Consider the following half-reactions. What is the maximum Eo of a cell constructed using two of these half-equations.
Perform the following mathematical operations, and express each result to the correct number of significant figures. 0.19*6.022*10^23
Explain the structural feature of Acetanilide molecule - Identify one structural feature of the acetanilide molecule
How can I calculate the equilbrium constant and delta G and S given the enthalpy per mol of reaction and the final number of moles at equilbrium?
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