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Liquid nitrogen has a density of 0.808 g/mL and boils at 77 K. Researchers often purchase liquid nitrogen in insulated 175 L tanks. The liquid vaporizes quickly to gaseous nitrogen (which has a density of 1.15 g/L at room temperature and atmospheric pressure) when the liquid is removed from the tan. Suppose that all 175L of liquid nitrogen in the tank accidentally vaporized in a lab that measured 10.00mx10.00mx2.50m. What maximum fraction of the air in the room could be displaced by the gaseous nitrogen?
What is the molarity of your HCl solution if it take 35.25 mL to reach the second equivalence point of a titration against 0.2225 grams of standard sodium carbonate?
Determine the amount of heat given off when 1.26 x 104 g of NO2 are produced express your answer (in kJ)?
Calculate the molar solubility of Fe(OH)2 in a buffer solution where the pH has been fixed at the indicated values. Ksp = 7.9 x 10-16.
Calculate the mass of solid NaCl that must be aded to 1.50 L of a .100 M AgNO3 solution to precipitate all the AG+ ions in the form of AgCl
Which of the following statements is true about p-type silicon semiconductors? a. It is produced by doping Si with P or As. b. It does not conduct electricity as well as pure Si. c. Electrons are the mobile charge carriers. d. All are true. e. Non..
What is the pH of the solution before adding NaOH. What is the pH of the solution after adding NaOH
Imagine that you have a 5.50 L gas tank and a 2.00 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch
If the pressure in the cylinder is 5.28 atm after the neon is added, what was the original pressure (in atm) of argon in the cylinder?
In 1934, Edward A. Doisy of Washington Univeristy extracted 1361 kg og hog ovaries to isolate a few milligrams of a potent female hormone. Doisy burned 5.00 mg of this precious sample in oxygen and found that 14.54 mg of CO2 and 3.97 mg of H2O wer..
Pyridine is a weak base that is used in the manufacture of pesticides and plastic resins. It is also a component of cigarette smoke. Pyridine ionizes in water as follows: C5H5N + H2O C5H5NH+ + OH- The pKb of pyridine is 8.75. What is the pH of a 0..
A gas occupying a volume of 695 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
A reaction has the following characteristics under standard conditions: ?H° = positive, ?S° = positive. This reactionA. is nonspontaneous at all T
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