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Calculate the mass of ethylene glycol, C2H6O2 , that must be added to 1.000 kg of ethanol, C2H5OH, to reduce its vapor pressure by 13.2 torr at 35°C. The vapour pressure of pure ethanol at 35°C is 1.00 x 10 -2 torr.
Calculate the half-life (in s) of a first-order reaction if the concentration of the reactant is 0.0654 M 18.4 s after the reaction starts and is 0.0112 M 82.9 s after the reaction starts.
If 3.1 mol of ethane (C2H6) undergo combus tion according to the unbalanced equation C2H6 + O2 -! CO2 + H2O, how much oxygen is required?
If the gas is at 23C and 1.0 atm, what mass of helium is in the blimp? The Goodyear blimps, which frequently fly over sporting events, hold approximately 1.85×105 ft^3 of helium.
Determine the partial pressures of each of the reactants CH4 O2 NO in the flask and the partial pressures and of each of the products and the total pressure in the flask
The element boron has two naturally occurring isotopes with masses of 10.0129 amu and 11.0093 amu. What is the percent abundance of the second isotope?
What is the molar heat of vaporiza-tion of C6H6 if the vapor pressure of C6H6 is 120 torr at 27 degree celsius, and its normal boiling point is 80.1 degree celcius.
calculate the wavelength of the photon emitted when an electron drops from 4d obital to a 2p orbital in a hydrogen atom using Rydberg constant as 1.097 x 10-2 pm-1 .
Compute the free energy of hydrolysis of Adenosine Tri Phosphate in a rat liver cell in which the ATP, ADP and Pi concentration
CO2 Dissociation by means of electronic excitation. Using Fig. 5-6, calculate the decrease in energy thresh- old of the CO2 dissociation through electronic excitation related to preliminary vibrational excitation
A gas sample containing N2 and O2 was found to contain 72% N2. If the pressure of the sample was 2.0 atm, what is the partial pressure of O2?
Determine how many liters 8.93 g of carbon dioxide gas would occupy at 150°C and 1.00 atm
Calculate the change in enthalpy and entropy of 50 g of liquid water starting at 10 degrees Celsius and completely evaporating into H2O gas at 100 C.
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