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Mix 200.0 mL of 0.30 M HClO with 300.0 mL of 0.20 M KClO. The Ka for HClO is 2.9 x 10-8. Calculate the [H3O+], the [OH-] the pH and the pOH of the solution.
what is the molarity of a solution made by dissolving 26.42g of (NH4)2SO4 in enough H2O to make 500 mL of solution?
A flask contains 0.180 of liquid bromine br2, . Determine the number of bromine molecules present in the flask.
A 100.0 mL sample of water from a salt lake has a chloride ion concentration of 0.25 M. Does AgCl (s) precipitate from solution if 5.0 mL of 0.10 M AgNO3 (aq) is added to the sample
Calculate the amount of heat liberated (in kJ) from 293 g of mercury when it cools from 79.0°C to 14.0°C.
Calculate the root mean square velocity of the CH4 molecules in a sample of CH4 gas at 281 K and at 533 K.
Suppose that you have 0.500 L of each of the following solutions, and an unlimited supply of water. (Note: C9H7NHBr is a salt containing the ions C9H7NH+ and Br
The density of iron is 7.87 . What is the mass of a 4.00 4.00 1.00 block of iron? Express your answer to three significant figures and include the appropriate units.
calculate delta H1 and delta H2 and heat capacities of the calorimeter plus salt solution.
A 2.30-g sample of a large biomolecule was dissolved in 16.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C.
Write a balanced nuclear reaction for the production of dubnium-260 and neutron(s) by bombardment of californium-249 with high-energy
A solution is prepared by dissolving 6.00g of unknown nonelectrolyte in enough water to make 1.00L of solution. the osmotic pressure of this solution is 0.750 atm at 25.0 C. what is the molecular weight of the unknown solute ( R= 0.0821 L.atm/K.mo..
At 800K the equlibrium constant, Kp for the following reaction is 3.2 *10^-7. 2H2S(g) 2H2(g)+S2(g). A reaction vessel at 800 K initially contains 3.00 atm of H2S. If the reaction is allowed to equilibrate, what is the equlibrium pressure of S2
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