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You wish to determine the molarity of K^+ ions in a 50.0 ml sample of K3PO4. you completely react the potassium phosphate with calcium nitrate. Upon completion you obtain 0.542 g of calcium phosphate. Determine the molarity of K^+ ions in the original solution.
2K3PO4(aq) + 3Ca(NO3)2 (aq) = 6KNO3(aq) + Ca3(PO4)2(s)
The explosion of 2.0 mol of solid Trinitrotoluene (TNT; C7H5N3O6) with a volume of approximately 274 mL produces gases with avolume of 448 L at room temperature and 1.0 atm pressure. How much PV work in kilojoules is done during the explosion
What is the pH of 1) 0.001 M H2SO4 and 2) 0.001 M NaOH. What would be the resultant pH of a solution prepared by adding 25 ml of solution 1 to 20 ml of solution 2?
Consider a two state system with a difference in energy of 200 cm^-1. What is the temperature of the system if there are 5 particles in the ground state and 10 in the excited state
A car accelerates from 0 to 60 mph in 4.5 seconds. a.) What is the average acceleration, in mph/s?
A 275.0 mL sample of O2 is collected over water at 60.0 degrees Celsius. The total pressure is 755 torr. What is the volume of the O2 at STP? (The vapor pressure of water at 60 degrees Celsius is 149 torr)
Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the reaction.
A 2.00 L sample of air at -50 degreees C has a pressure of 700 torr. What will be the new pressure in torr if the temp is raised to 50 degrees C and volume is increaed to 4.00 L
How many liters of water vapor are produced when 26.1g of NH4NO3 decomposes and how many grams of NH4NO3 are needed to produce 18.0L of oxygen?
Write down the second period elements (ie. lithium through neon), on order of increasing first ionization energy and Write the electron configuration for a gallium atom.
Compute the molarity of a solution made by adding 27.3mL of concentrated potassium hydroxide (34.5 % by mass, density 1.46 g/mL) to some water in a volumetric flask then adding water to the mark to make exactly 250mL of solution.
The solubility of ammonium chloride at 70C is 60g of solute per 100g of water. What solution would be saturated at 70C
1.00g each of NaCl,CaCl2,C6H12O6 dissolved in 100.0g water. What is the vapor pressure of the solution at 100C. What is the freezing point and boiling point
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