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Two acids, each approximately 0.01 M in concentration, are titrated separately with a strong base. The acids show the following pH values at the equivalence point: HA, pH = 9.5, and HB, pH = 8.5.a)Which is the stronger acid, HA or HB?b)Which of the conjugate bases, A- or B- is the stronger base?
A sample of oxygen gas has a volume of 131 L at 25°C and a pressure of 0.982 atm. Calculate the volume of this oxygen sample at STP.
What will the temperature be when the ice cube has just melted. Use 4.184 J/K*g for the specific heat capacity of ice and water. If the water is then heated to 80 degrees C by burning methane (delta H= =890.31 kJ/mol) how many grams of methane wou..
separation and purification scheme 50% toluic acid, 40% fluorene, 10% 1,4-dibromobenzene
A first order reaction has a half-life of 1.34 x 10^-3 hours. If the initial concentration of the reactant is 8.00M, what is its concentration after 4 half-lives?
At a pressure of 1 atmosphere and a temperature of 25 °C, 500 cm3 of the gas HX has a mass of 0.400 g. Calculate the value of the relative atomic mass of X and hence identify element X.
Three common hydrocarbons that contain four carbons are listed here, along with their standard enthalpies of formation
suppose the hydrate was heated too quickly and some of it was lost as it spattered out of the container . explain how this would effect .
an evacuated empty 276 ml glass bulb weighs 129.6375 g. filled with an unknown gas the bulb weighs 130.0318 g.
What will be the likely effect of clearing forests and converting them to grasslands and crops on (a) the earth's reflectivity (albedo) and (b) the earth's average surface temperature?
C is unique in its ability to form single , double and triple bonds with another C atom. Predict the structure of the following compounds.
if 69.5 kj of heat is applied to a 1034 g block of metal the temperature of the metal increases by 11.4degc. calculate
If the partial pressure of helium is the same as the partial pressure of oxygen, what do you know about the number of helium atoms compared to the number of oxygen molecules? explain.
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