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Define a flask contains 250ml of a 0.125 solution of Na3PO4. If A sample containing 0.250 moles of Na+ is added to the solution. Presuming no volume change, define what is the new molarity of the new solution?
Calculate the wavelenght of the light emitted when an electron in a one dimensional box of lenght 3.0 nm makes a transition from the n=5 state to the n=4 state.
Explain why saturated sodium hydrogen carbonate is used to wash the organic layer in the Friedel Crafts Acylation.
The Radio signals from Zog reveal that balloonium is a monatomic gas with two positive nuclear charges. Use the data to assume the names that Earthlings give to these elements
What volume of .100 M NaCl is needed to react completely with 5.00mL of .200 M Pb(NO3)2.
Cu+(aq) + 2 Cl ?(aq) reverse reaction arrow CuCl2?(aq) K = 8.7 104. Calculate the solubility of copper(I) chloride in 0.36 M NaCl.
Calculate the pH in the solution formed by adding 10.0 mL of 0.050 M NaOH to 40.0 mL of 0.0250 M benzoic acid (HC7H5O2, Ka=6.3X10-5
From the solubility data given, calculate the solubility products for the following compound Ag3PO4, 6.7 x 10^-3 g/L
If you fill the larger tank with oxygen to a pressure of 125atm , to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time. Assume ideal behavior for all gases.
How many liters of CO2 will be produced with the complete combustion of of methane (CH4) with 4.3L of oxygen?
Consider a solution of a weak acid at a pH equal to its pKa. By how much would the pH change, and in which direction, if we added to this solution enough base to neutralize 10% of the total acid?
Calcium carbonate and sand mixture with weight of 4 grams is reacted with excees of HCl results in the production of carbon dioxide then find out the percent of calcium carbonate in the original mixture?
Calculate the concentration of chloride ions when 100.0 mL of 0.205 M sodium chloride is mixed with 250.0 mL of 0.150 M calcium chloride.
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