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A sample gas at standard prssure is heated from 20c to 200c. If the volume remains constant. What is the fimal pressure in mmhg
before addition of any KOH b) after addition of 25.0 mL of KOH c) after addition of 35.0 mL of KOH d) after addition of 50.0 mL of KOH e) after addition of 60.0 mL of KOH
What concentration of sodium formate, NaHCO2, is needed for a buffer solution at a pH of 3.62, if it contains formic acid, HCO2H, with a concentration of 0.150 M.
corn farmers typically use 5000 kg of ammonium nitrate per square kilometer of cornfield per year. Ammonium nitrate can be prepared by the following reaction. how much nitric acid would be needed to make the fertilizer needed for 1km2 of cornfield..
Aluminum reacts with excess hydrocholoric acid to form aqueous aluminum chloride and 28.7 mL of hydrogen gas over water at 27C and 751 mmHg. How many grams of aluminum reacted
A 1.80-L flask is filled with propane gas (C3H8), at 1.00 atm and -19.4°C. What is the mass of the propane in the flask.
How many moles of nitrogen, N, are in 65.0 g of nitrous oxide,N2O ? Express your answer with the appropriate units.
Determine the molar absorptivity of the acidic form of bromocresol green at 445 nm and at 615 nm. Given: Stock soln of bromoscresol green= 80.0 mg/L Molar Mass= 698.0 g/mol ?(445nm)=A445/[BG]
A solution is known to contain Bi3+ ion or Cd2+ ion or both. Describe the test(s) that could be used to separate and identify these ions. Describe the results you would expect to see for each ion, if that ion were present.
Molecular chlorine and molecular fluorine combine to form a gaseous product. Under the same conditions of temperature and pressure it is found that the volume of Cl2 reacts with three volumes F2 to yield two volumes of the product.
Determine the temperature (in degrees Celsius) above which the reaction is non-spontaneous under standard conditions.
Identify the reagents for all three steps. Draw the structures of organic compounds A and B.
Vitamin C is essential for prevention of scurvy (and large doses may be effective in preventing colds). Combustion of a 0.2000-g sample of this carbon-hydrogen-oxygen compound yields 0.2998 g CO2 and 0.0819 g H2O. What is the EMPIRICAL FORMULA of ..
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