Determining the number of moles
How many moles contain each of the following?
1.25 x 10^15 molecules CO2
3.59 x 10^21 formula units sodium nitrate
2.89 x 10^27 formula units calcium carbonate
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Ethical performance appraisal issues, Provide the rationale for your answers. Complete "Exercise: Ethical Performance Appraisal Issues" in the course text, Human Resource Management Applications. Pro
Calculate the mass of nitrogen dissolved at room temperature in an 82.0 {rm L} home aquarium.Assume a total pressure of 1.0 {rm atm} and a mole fraction for nitrogen of 0.78.
Stock solution is prepared by adding 28 mL of 0.2 M Na3PO4 to enough water to make 76 mL. What is the PO43- concentration of 55 mL of the stock solution?
How many moles contain each of the following? 1.25 x 10^15 molecules CO2 3.59 x 10^21 formula units sodium nitrate
The total pressure in the system at equilibrium is 3.0 atm. A separate measurement shows that the mole fraction of O2 at equilibrium is 0.12. Calculate the partial pressure, in atm, of SO2 at equilibrium.
A 25.6 g sample of pure iron at 66°C is dropped into 65 g of water at 33°C. What is the final temperature of the water-iron mixture?
Acetylene gas undergoes combustion to produce carbon dioxide and water vapor. if 75.0 L of co2 are produced how many liters of acetylene are required?
How many grams of sodium fluoride (used in water fluoridation and manufacture of insecticides) are needed to form 485 g of sulfur tetrafluoride?
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