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A solution of sodium hydroxide is prepared by mixing 2.00g of NaOH with 10.0g of water. The percent, by mass of NaOH is what?
What is the magnitude of the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2?
How much heat is absorbed when 28 grams of H2O is converted into steam at 100 degrees C?
The following lab requires water free conditions as well as reflux for reaction to be successful. Draw a schematic and label your reaction set up
Find the pH of the equivalence point and the volume (mL) of 0.0740 M KOH needed to reach the equivalence point in the titration
how many no. of hydrogen ions are present in 10 millionth part of 1.33 cc of pure water at 25 degree celsius.
Calculate the heat given off when 177 g of copper cools from 155.0 Celsius to 23.0 Celsius. The specific heat capacity of copper is .385 J/g C
A cylindrical glass tube 15.0 cm in liength is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 9.64g.
if 525 mL of gas at 25 degrees celcius is heated to 50 degrees celcius at constant pressure, calculate the new volume.
chloromethane gas (CH3Cl) at 20.0 degrees celsius and 0.973 atm pressure. The molar mass of a chloromethane is 50.5 g/mol.
some people said that the precipitate disappeared and the solution went back to a bright orange/yellow clear colour, what is the chemical equation that describes both these reactions,
What mass of aluminum metal can be produced per hour in the electrolysis of a molten aluminum salt by a current of 21 A?
Calculate the equilibrium value of Pb+2(aq) in 1.00 L of saturated PbCl2 solution to which 0.250 moles of NaCl(s) has been added. Assume that no volume change occurs.
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