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Problem- Suppose that a student doing this experiment ran into some procedural and calculation difficulties. State the effect each of the following would have on the mass percent H2O2 determined from this experiment. Briefly explain.
1) The student neglected to take into account the pressure of water vapor in the system when doing the calculations.
2) The H2O2 solution had decomposed slightly after standing for a while, so their concentration was somewhat lower than the laboratory instructor had reported.
3) The student failed to read the barometric pressure at the time of the experiment. When she read the pressure the next day for use in her calculations, it was .50 in. Hg higher thatn it had been during the experiment.
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describe one or more simple chemical tests that would distinuish acetaminophen from ibuprofem
for a certain change the value of U is -2.37 kJ. During the change, the system absorbs 650 joules. how much work did the system do.
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Propose a synthesis of ethyl isopropyl ether from isopropyl alcohol using the Williamson ether synthesis.
To identify a diatomic gas (\rm X_2), a researcher carried out the following experiment: She weighed an empty 1.00-\rm L bulb, then filled it with the gas at 1.10 \rm atm and 23.0 ^\circ\rm C and weighed it again.
Marine fats have high concentrations of omega-3 fatty acids. What importance do they have in the diet
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