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Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2+ and 0.0400 M Ag+. What will be the concentration of Ca2+ when Ag2SO4 begins to precipitate?
[Ca2+]=?
What percentage of the Ca2+ can be separated from the Ag+ by selective precipitation?
How many moles are present of an ideal gas at the following conditions: 1.0 atm, 25.00C
the mineral greenockite is a yellow sulfide of cadmium that is 78.0% cadmium and 22.o% sulfer. determine the emipirical formula of greenockite.
determine whether or not the mixing of each of the two solutions indicated below will result in a buffer. 150 mL of .10M HF, 135 mL of .175M HF
Propane is often used for gas grills and is typically purchased by filling a propane tank with 20 pounds of propane. What is the enthalpy change when 18 pound of propane is burned?
Draw out the complete structural formula for glutamic acid and glutamine. One has a pI of 5.65 and the other has a pI of 3.22
Explain the impact of ionic size on the activity coefficient of a species. 1) give the correct trend. 2) give a complete mathematical explanation, 3) give a conceptual explanation.
Using the data in your textbook, calculate the concentrations of the molecular and ionic species and the pH in aqueous solution that has a formal composition of 0.0700 M KH2PO4 + 0.5500 M K2HPO4.
From experimental data for rate of disappearance of CH3CHO, derive the rate law and the rate constant, k (with units).
You pass a road sign saying "New York 115 km." If you drive at a constant speed of 65 mi/h, how long should it take you to reach New York? (Round to the nearest minute.)
A 46.2mg sample of phosphorus reacts with selenium to form 135mg of the compound. What is the empirical formula of the phosphorus selenide
The bottom of a box has a surface area of 25.0 cm2. The mass of the box is 34.0 kilograms. Acceleration due to gravity at sea level is 9.80 m/s2. What pressure is exerted by the box where it rests?
Under what conditions would you expect a real gas to be (a) more compressible than an ideal gas; (b) less compressible than an ideal gas
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