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Calculate the enthalpy change in kilojoules when some KOH is added to 47.727 g of water and the temperature increases by 7.6 degress C.
If a gas is collected over water at 30.0oC in a 50.0 ml container and the pressure of the "wet" gas is found to be 645 torr, what would the pressure of the "dry" gas be in the same container and temp.
What is the molecular weight of a gas if a 21.0 g sample has a pressure of 836 mm Hg at 25.0 C in a 2.00 L flask?
vessel is filled with .202 mol of NO and .202 mol of O3 at 366K. Find the partial pressure of each produce and the total pressure in the flask at the end of the reaction.
Gas Nitrous Oxide (N20) is used as an anesthetic and in aerosol cans to produce whipping cream. It is a potent greenhouse gas and decomposes slowly to N2 and O2.
A metal sample weighing 40.0 g and at a temperature of 99.1 C was placed in 38.6 g of water in a calorimeter at 25.0 C. The calorimeter reached a maximum temperature of 32.8 C.
Is there a list of hazardous or safe chemicals for Thailand? Where can I find it?
Calculate the concentration of HC2H3O2 or NH3 in each of the solutions you measured. By how many units did the pH of a solution of a weak base or acid
In a particular experiment, 2.25 g of NH3 and 3.75 g of O2 are placed in a container and allowed to react. How many grams of NO will have been formed when all of the limiting reactant has been consumed.
Determine the mole fraction of sodium chloride(NaCl) in the solution if this solution is formed by mixing 17.0 grams of sodium chloride NaCl in 85.0 grams of Water?
If a sample of sodium is dropped into a container of water the reaction is:
A soft drink contains 44 mg of sodium in 325 g of {rm H_2O}. What is the concentration of sodium in the soft drink in mass percent?
The normal boiling point of methanol is 64.7°C. A solution containing a nonvolatile solute dissolved in methanol has a vapor pressure of 710.0 torr at 64.7°C. What is the mole fraction of methanol in this solution?
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