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How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 550. mL of 0.906-M solution of NH3 in order to prepare a pH = 8.90 buffer?
If oxygen gas were collected over water at 22 C and the total pressure of the wet gas were 650 mm Hg, what would be the partial pressure of the oxygen?
A camera falls from a blimp that is 485 m above the ground and rising at a speed of 16.8 m/s. Find the maximum height reached by the camera with respect to the ground. The acceleration of gravity is 9.8 m/s2
If 15 g of KClO3 are added to 200 g of water at 25 degrees celsius with stirring, how much of the KClO3 will dissolve?
What is the concentraion of toulene in this sample? Does this exceed the standard? (maximum contaminant level is 1.0 mg/L 6) How much calcium nitrate has to be added to 1000L of solution to provide 130ppm Ca^2+ if the water supply contains 40ppm Ca..
Determine the volume (in mL) of 0.00437 M cesium hydroxide (CsOH) that must be added to 81.4 mL of 0.0282 M hypochlorous acid (HClO) to yield a pH of 6.70.
Methanol, ethanol, and n-propanol are three common alcohols. When 1.00 g of each of these alcohols is burned in air, heat is liberated. Calculate the heats of combustion of these alcohols in kJ/mol.
explain why this series of reaction will produce the 3,5-dibromotoluene and direct bromination of toluene produces the 2,4-dibromotoluene.
If a solution containing 92.455 g of mercury(II) chlorate is allowed to react completely with a solution containing 16.642 g of sodium sulfide, how many grams of solid precipitate will be formed?
Magnesium has three naturally occurring isotopes, 24Mg (isotopic mass = 23.9850 amu, abundance 78.99%), 25Mg (isotopic mass = 24.9858 amu, abundance 10.00%), and 26Mg (isotopic mass = 25.9826 amu, abundance 11.01%)
A modern chealting agent used for this purpose is succimer (C4H6O4S2). Suppose you are trying to determine the appropriate dose for succimer treatment of lead poisoning.
Determine the molarity of the solution If 3.00 grams of Ammonium sulfate is dissolved in enough H2O to form 300. mL of solution,?
10g of CaCO3 are treated with a solution of HCl and 1.12 litre of CO2 are produced at STP . find out the number of moles of HCl in the solution
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