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Explain an unknown acid is a diprotic acid can donate 2 proton. 0.954g of the unknown acid is titrated with 0.509M NaOH.
H2A (aq) + 2NaOH (aq)->2H20(l)+Na2A(aq)34.04ml of base is required to reach the second equivalence point. State the molar mass of the acid.
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.
How many grams of ethanol (C2H5OH) (MW C2H5OH= 46.07 g/mol) would have to be burned to produce 450 kJ of heat
A researcher studying the nutritional value of a new candy places a 5.9 gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen.
show by calculation that 10 ml of 1.5 m naoh is sufficient to convert 1 g t-butylphenol completely into its conjugate
A quantity of 7.48g of a compound is dissolved in water to make 300 mL of solution. The solution has an osmotic pressure of 1.43 atm at 27 Celsius. Calculate the molecular weight of the compound.
The cell potential of the subsequent electrochemical cell depends on the pH of the solution in the anode half-cell
how did rutherford interpret the observation that only a very few of the a particles were scattered by the gold foil
The volume of water in the calorimeter decreased by 0.16 during the reaction. Calculate the enthalpy of the reaction (in kJ/mol). Show all steps of the calculation
a sample of propane c3h8 is placed in a closed vessel together with an amount of o2 that is 2.50 times the amount
The equation for a equilibrium reaction a+b ab. following le chateliers principal if the concentration of a is increased than
Ten moles of ideal gas, in the initial state P1=10atm, T1=300K, are taken round the following cycle- reversible change of state along a straight line path on the P-V diagrm to the state P=1 atm, T=300K,
Calculate K for 2 NO(g) + O2(g) 2 NO2(g) from the observation that when equilibrium is established at 500 K, there are 0.190 moles NO2, 2.65 X 10-4 moles NO, and 0.606 moles O2 in a volume of 0.759 liters.
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