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A sample of vinegar has a pH of 2.90. Assuming that acetic acid (HC2H3O2) has one acidic H and is the only acid in vinegar; calculate the concentration of HC2H3O2 in this sample. (Ka=1.8e-5)
A student added more KSCN solution that instructed when making standard solution. assuming no other errors were made in the experiment
The crystalline form of rhodium (Rh) is composed of face-centered cubic unit cells. If the density of rhodium is 12.42 g/cm3 at room temperature
The solubility of a gas is 0.34 g/L at STP. What is its solubility at a pressure of 0.80 atm and the same temperature?
How would the observed molar mass of the unknown lioquid have been affected by the following circumstances (would it be higher, lower than the true value, or remain unchanged.
What is the mol fraction Na2SO4 in a solution which is 11.5% by weight Na2SO4 (molar mass Na2SO4 = 142.06 g/mol and H2O = 18.016 g/mol)?
What volume (in mL) of a 1.420M NaOH solution is required to titrate 25.0mL of 4.50M HCl solution.
Draw constitutional isomers of C5H8 that are terminal and internal. Name each molecule according to IUPAC.
Was measured at several temperatures and the following data was collected, Using this data, graph ln k 1/T. using your graph determine the value of Ea please show work and show a graph
Nitrogen reacts with hydrogen according to the following equation.
A voltaic cell is constructed by immersing a strip of silver in a 1.0M AgNO3 solution and a strip of cadmiun metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way. What is the cell potential for t..
Which molecule is polar? Which of the following is not an ionic compound? Which of the following is not an ionic compound?
If a 220 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.3x1.0 ft, what is the average thickness of the sheet in meters?
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