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Barbital, Ka=1 X 10-8, a weekly acidic sleeping pill is titrated against 0.200 M KOH solution. Explain what is the pH after 10.0mL of KOH has been added to 200.0mL of 0.017 M of Barbital?
Americium-241 is widely used in smoke detectors. The radiation released by this element ionizes particles that are then detected by a charged-particle collector. The half-life of 241Am is 432.2 years, and it decays by emitting alpha particles
Identify all of the substances that are used or produced in this experiment A5. Distinguish between elements and compounds.
Classify each of the reactions in problem 4 as an oxidation-reduction, substitution, addition, or esterfication reaction. Write an equation for the synthesis of
Why does the 13C NMR show five different types of carbon atoms when the molecular formula indicates the compound contains seven carbon atoms
Will nitric acid digest and contaminate a sample with additional carbon if it is filtered with a cellulose filter paper?
an unknown solid mixture containing benzoic acidcopperiisulfate and sand. she added 15ml.of acetone to her sample.
Methanol burns in oxygen to form carbon dioxide and water. 2CH3OH+3O2=2CO2+4H2O. Calculate the rxn of delta H, G & S at 25C
What volume of 0.1M NaOH is required to fully neutralize 20 mL of 0.1M acetic acid? of 50 mL of 0.04M Phosphoric acid
Calculate the amount of heat released when 5.3 moles of steam at 100 degrees celscus turns to water at the same temperature
Which of the following molecules do you think would be subject to the Pauli principle's effects on rotational levels? (Check all that apply) a. methane b. dihydrogen c. HCl d. water e. dinitrogen f. dinitrogen where one atom is isotope 14 and the ..
Calculate the temperature that will be required for the non-enzymatic hydrolysis of urea to proceed as rapidly as the enzymatic hydrolysis at 21'C
How do you determine the number of protons and neutrons in an atoms' nucleus and the number of electrons in its first and second shells?
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