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Explain how many moles of argon gas are in a sample that is collected over water at 27oC vapor pressure of water is 27torr if the volume of the gases is 430mL and the atmospheric pressure is 754torr?
1.0.0123mol
2.1.67 x 102mol
3. 2.23 x 102mol
4. 2.00 x 102mol
5. None of these
Add 28 ml of water and 1.0 ml of concentrated hydrochloric acid to the erlenmeyer flask.), but otherwise followed the above procedure. The student obtained _no product. Explain why?
Which of the following observations is the strongest argument that in favor of the hypothesis that protein structure and function are related?
What dansylated amino acids would be isolated after reaction of S-F-H-Y-W-C-T-L-C-K-L-I-N-D-S with dansyl chloride an the complete with hydrolysis
An infant ibuprofen suspension contains 100 mg/5.0 mL suspension. The recommended dose is 10mg/kg of body weight.
Unlkie amines, amides are not ver strong bases. In fact, the nitrogens in amides are not even the most basic position - protonation occurs at the carbonyl oxygen. Provide three reasons why the oxygen in an amide is more basic than the nitrogen.
the ferrous ion fe2aq reacts with the permanganate ion mno4- aq in an acidic solution to produce the ferric ion fe3aq.
Calculate acidity of sample and express in % (w/v) CH3COOH. show complete solutions and please don't cite websites or like
Arrange the following atoms in order of decreasing atomic radius. Rank from largest to smallest. To rank items as equivalent, overlap them. Si, O, I, Ge
An impure sample of potassium hydrogen phthalate, KHP, having a mass of 111.07 g was dissolved in water. This acid sample was neutralized by the addition of 310.0 mL of 0.250 M NaOH
A zero-order reaction has a constant rate of 3.50×10-4 M/rm s. If after 65.0 seconds the concentration has dropped to 1.00×10-2 M, what was the initial concentration?
the ph difference across the membrane of a glass electrode is 6.45. how much voltage is generated by the ph gradient
Suppose that the reaction A---> products is exothermic and has an activation barrier of 75kJ/mol. Sketch an energy diagram showing the energy of the reaction as a function of the progress of the reaction. Draw a second energy curve showing the eff..
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