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A 7.069 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 8.969 grams of CO2 and 2.448 grams of H2O are produced.
In a separate experiment, the molar mass is found to be 104.1 g/mol. Determine the empirical formula and the molecular formula of the organic compound.
The following question refers to a solution that contains 1.79 M hydrofluric acid, HF (Ka = 7.2 x 10^-2) and 3.00 M hydrocyanic acid, HCN (Ka = 6.2 x 10^-10). What is the pH of this mixture of weak acids
The volume of fluorine gas required to react with 2.67 g of calcium bromide to form calcium fluoride and bromine at 41 ºC and 4.31 atm is how many mL
To find the pKa of X-281, you prepare a 0.085M test solution of X-281. The pH of the solution is determined to be 3.00. What is the pKa of X-281
why is vapor unlikly to behave as an ideal gas near the temperature at which the vapor would liquefy
Calculate the gibbs energy , entropy and enthalphy of mixixng when 1 mol of C6H14 is mixed with 1 mol of C7H16. at 298K. assuming to be ideal.
The rate constant for a certain reaction is k = 2.60×10-3 s-1 . If the initial reactant concentration was 0.200M , what will the concentration be after 14.0 minutes?
Explain the general idea of the LCAO-MO method.
the precipitate is dissolved on heating the solution and is generated back on cooling . Identify the metal ion which may contain, also, write a balanced equation corresponding to the formation of precipitate
Question- The combustion of 3.010 g sucrose, in a bomb calorimeter, causes the temperature to rise from 24.92 to 78.33?C. The heat capacity of the calorimeter assembly is 4.90 kJ/?C. a) What is the heat of combustion of sucrose, expressed in kJ/mol..
A human body contains 6 liters of blood. The hemoglobin content of blood is about 15.5g/100 mL of blood. The approximate hemoglobin molecular weight is 64,500g/mol. How many moles of hemoglobin are present in a typical adult
what is the change in temperature of the water after the ice has completely melted? The enthalpy of fusion of water is 6.02 kJ/mol, and the specific heat capacity of the liquid is 4.184 J/g/K. Assume that the amount of extra water produced by the ..
A total of 2.00 moles of a compound is allowed to react in a foam coffee cup that contains 127g of water. The reaction caused the temperature of the water to rise from 21.0 to 24.7 celcius .
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