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An acid solution is 5.00% HCl by mass. Assuming that the density of the solution is 1.0 g/mL, find the molarity of the hydrogen ion in the solution. The molar mass of HCl is 36.5 g/mol
titrating a solution containing 25 mL of 0.0100 M MgCl2 solution, 1 mL of NH3OH buffer, and 10 drops of Calmagite with EDTA. Calculate the concentration of EDTA. Report the answer with three sig figs.
Calculate the amount of energy released by the freezing of 13.3 g of a liquid substance, given that the substance has a molar mass of 82.9 g/mol and a molar heat of fusion of 4.60 kj/mol.
The volume of a 24.0g sample of methane gas is 22.8L at 40.0*C and 4.00atm. What will it's volume be at 68.0*C and 4.00atm.
A sample of gas has a pressure of 328 torr while occupying a volume of 8.6 liters at 25 degrees Celsius. If the volume was reduced to 2.4
A 15.0-g sample of a hydrocarbon is placed in a balloon at 1.00 atm and 25°C, and the volume of the balloon is 12.2 L. The hydrocarbon is 79.89% carbon and 20.11% hydrogen by mass. Determine the molecular formula of the hydrocarbon.
a sample of chlorine gas occupies a volume of 946ml at a pressure of 726mmhg. Calculate the pressure of the gas in (in mmhg) if the volume is reduced at constant temperatures to 154ml.
Name a compound with the formula, C5H12, which will show only one peak in the NMR spectrum.
The optical rotation of a sample composed only (S)-1-amino-1-phenylethane is determined. [a]obs = -157.0 degrees. If the cell path length was 1.0 dm and the concentration of (S)-1-amino-1-phenylethan in the sample was 5.2 g/mL
In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 26.50 mL of 0.0502 M NaOH but overshoot the end point
Calculate the pH after the addition of 0.00mL, 20.00mL, 24.00mL, 25.00mL, 26.00mL, 35.00mL, 44.00mL, 45.00mL, 46.00mL and 50.00mL of 0.200 M HClO4.
The highly reactive OH radical (a species with an unpaired electron) is believed to be involved in some atmospheric processes. The bond enthalpy for the oxygen-to-hydrogen bond in OH as 460 kJ/mol. What is the longest wavelength (in nm) of radiati..
In aqueous solution, which of the following would be an acid according to the definitions of the Arrhenius, the Brønsted-Lowry, and the Lewis theories?
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