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A 0.421-g sample of asprin prepared in ther laboratory isdissolved in 95% ethanol, diluted with water, and titrated to thephenolphthalein endpoint with 17.3 mL of 0.114 M NaOH.
a. How many moles of acetylsalicylic acid (molar mass = 180.2g/mol) are present in the sample?
b. Caculate the percent purtity of aceylsalicylic acid in theasprin sample.
a tank contains a mixture of 3.6 mol of n2 2.7 mol of o2 and 1.8 mol of co2 at 25degc and a total pressure of 10.0 atm.
How much heat is released when 25mL of 0.10 M NaOH reacts with 50 mL of 0.10 M HCl?
what mass of barium is produced when molten BaCl2 is electrolyzed by a current of 3.30 105 A for 7.00 hours?
How many grams of titanium tetrachloride can be produced?
One mole of an ideal gas with a volume of 1.3 L and a pressure of 6.9 atm is allowed to expand isothermally into an evacuated bulb to give it a total volume of 3.1 L. Calculate w and q. Also, calculate qrev for this change of state.
a 2.16-l sample of oxygen is collected at 99.6 kpa and 305k. if the pressure increases to 122.8 kpa and the temperature
A gas occupies 12.3 liters at a pressure of 0.050 atm. What is the volume when the pressure is increased to 0.080 atm
A sample consisting of 1-bromopropane and 1-chloropropane isinjected into a gas chromatograph quipped with a nonpolar column.which compound has the shorter retention time? Explaine the answer.
A wastewater treatment plant serves a population of 83, 355 people. If its primary sedimentation tank can remove 55% of the incoming solids, how much primary sludge should be produced each week
A 4.00 solution of was prepared using 1.00 of water at 25.0 . Once the solid had all dissolved, the temperature of the solution was 12.3 . Calculate the heat of solution, , of . Assume that the specific heat of the solution is identical to that of..
Explain the differences between ionic bonding and covalent bonding, and how each type of bonding affects solubility, melting and boiling points, and reactivity of compounds. Include at least 2 examples of each and organize your information in a ch..
For the cyclohexanes substituted in the positions indicated, identify the substituents as either axial or equatorial in chair conformers. For example, a 1,2-cis relationship means that one substituent must be axial and one equatorial.
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