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What is the proper coefficient for water when the following equation is completed and balanced for the reaction in basic solution?
C2O4^2- (aq) + MnO4^- (aq) --> CO3^2- (aq) + MnO2 (s)
Sketch the line-bond structure for each molecule or polyatomic ion of the following. Designate the formal charges where applicable.
What is the equilibrium constant, K, value (ignore units) at 441.3 K for the following reaction ? N2(g) + 3 H2(g) ? 2 NH3(g) [Note (all at 25oC): (1) Standard enthalpies of formation for N2, H2, and NH3
How many kilojoules of heat are required to change 50.0 grams of ice starting at -20.0 C to 50 grams of steam at 125 C. (C is Celsius)
The tire is filled with dry air at sea level and a temperature of 60 degree F to 32 lb/square inch.standard sea level pressure is 101325 Pa at 0 degree C (STP).
Calculate the pH of the solution after the following volumes of HCl have been added. (For each part remember t ask yourslef these questions. What units am I working in?
If 30.0mL of .150M calcium chloride is added to 15.0 mL of .100 M silver nitrate what will be the final concentration of all ions the remain in the solution?
The C^14 decay rate for the sample of glue was found to be 5.60d/min/g. What is the approximate age of the glue. Disintegration of C^14 is a first order process with a rate constant 1.209*10^-4 year^-1.
you determine the temperature of the mixed portions of water to be 45 oC. What is the heat capacity of the calorimeter
Draw sodium formate by placing atoms on the grid and connecting them with bonds. Include all lone-pair electrons.
A solution has an H3O1+ concentration of 1.7 10-2 M. What is the hydroxide ion concentration?
(a) Derive the Cu2+ hydroxide solubility diagram given in class. Show your derivations for the lines and then plot the lines and include the solubility or CT,Cu as a function of pH (a log C - pH diagram)
Using a sample of 30.0 mL of Kr(g), is at 25°C and 756 mmHg. Calculate the new volume if the temperature is decreased to -125°C and pressure is decreased to 325 mmHg .
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