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Five standar solutions of HBr are prepared by serials dilutions in which at each stage 10.00 mL are diluted to 160.00 mL. Given that the concentration of the most dilute solution is 2.57*10 =(-6) M. Determine the concentration of the original HBr stock solution
How many grams of Na3PO4 is needed to produce 575mL of a solution that has a concentration of Na+ ions of 1.50M?
How would you prepare 1.000 L of a 1.000 mole L?1, pH 7.50 Tris-aka, tris(hydroxymethyl)aminomethane-buffer? You have pure Tris?HCl, {(HOCH2)3NH+,Cl?}
How much heat (in kJ) is evolved in converting 1.00 of steam at 150.0 to ice at -55.0? The heat capacity of steam is 2.01 and of ice is 2.09.
Using heat of fusion, specific heat of water, and/or heat of vaporization, calculate the amount of heat energy in each of the following. calories to condense 135 g of steam at 100^{circ}{rm C} and to cool the liquid to 15^{circ}{rm C} (two steps)
Write an equation for your preparation of acetyl chloride
A bunsen burner uses the combustion of butane (c_4_H_10_) as a means to provide heat. If during a laboratory experiment the class uses 875 grams of butane. how many grams of each product will be produced?
A Mixture of 80mL of Hydrogen Gas and 60 mL of Oxygen gas is ignited by a spark to form water (please show work) a) does any gas remain unreacted.
What is the freezing point of a solution of aluminum chloride that contains 42.0 g AlCl3 dissolved in 530. g of water?
Calculate the equilibrium constant for the reaction - flask at a certain temperature according to the reaction
Which of the following are true statements ?
what is the value of k using the equation delta Grxn=-RTlnk? (Assume -R is equal to -8.314 and T is 298K)
After allowing the solution to sit for 30 minutes the student determines that the bromide concentration was [Br-]= 0.0012 M. What is the Pb2+ concentration?
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