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The density of a gaseous compound of phosphorous is 0.943 g/L at 496 K when its pressure is 709 Torr. What is the molar mass of the compound?
Answer in units of g/mol. If the compound remains gaseous, what would be its density at 1.3 atm and 281 K?
Answer in units of g/L.
Calculate the concentration of Cu^2+ in a solution prepared by adding 4.5*10^-3 mol of CuSO4 to 0.490 L of 0.37 M NH3.
1.464 g of an unknown hydrocarbon (112.6 g/mol) burns in bomb calorimeter in excess oxygen. The heat capacity of the calorimeter,Cv, = 5.234 kJ/ºC and ?T =5.744 ºC. Find ?E for this hydrocarbon in kJ/mol.
what mass of carbon should be produced if the tums were pure calcium carbonate? this is theoretical yeild. equation
A solid mixture consists of 34.0g of KNO3 and 6.0g of K2SO4. The mixture is added to 130.0g of water. (this problem includes a solubility curve for other answers).
If you added 75ml of a 0.555M solution of NaCl to enough water to produce 950 ml of solution, what would be the resulting molarity?
a 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. the solution freezes at -1.23degc.
Would your calculation of the atomic mass of the metal be too high or too low if your hot metal sample cooled off, unbeknownst to you, while being transferred to the calorimeter
Penicillin is an important antibiotic isolated from a type of mold. If you have 0.0588 g Penicillin, C14H20N2SO4MW = 31239 g/mol , answer the following questions. What is the number of moles of nitrogen that are present
Make the following "working" dilutions of alkaline phosphatase (total 0.4 mL each) in microfuge tubes by diluting the stock preparation of 1.3 microgram/mL alkaline phosphatase. use the enzyme buffer (100 mM Tris (pH 8), 5 mM MgCl2 and 0.10 mg/mL BSA..
you determine the temperature of the mixed portions of water to be 45 oC. What is the heat capacity of the calorimeter
Why does an isochoric curve plotted on a TS diagram have a greater slope than an isobaric curve at the same temperature?
Isoprophyl alcohol has a vapor pressure of 90 mm Hg at 40C. If its normal boiling point is 335 K, what is the vapor pressure of isopropyl alcohol at its normal boiling point
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