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A balloon is filled with helium at sea level. The volume was measured to be 3.1 liters at a pressure of 0.97 atmosphere. If the balloon is released, it drifts upward. At a height of 4 kilometers, the pressure is measured to be 0.61 atmospheres. What is the volume of the balloon?
A state of dynamic equilibrium, Ag2CO3(s) 2Ag^+(aq) + CO3^2-, exists in solution. After water is added to the system and equilibrium is reestablished: what change in the number of moles of AG^+ (aq) occurs in the system? Explain.
The decomposition of NO2 by the following reaction at some temperature proceeds at a rate 5.40 x 10-5 mol NO2/L.s when [NO2] = 0.00878 mol/L. 2 NO2(g) ® 2 NO(g) + O2(g)
Calculate the molar enthalpy change ?H~rxn for the dissolution of KNO3 in water. Calculate in the error in ?H~
The normal boiling point of the liquid is 425 K. Liquid, X, and Y are all in equilibrium at 342 K and 1800 bar. Tc = 571K, Pc= 46 bar
How many grams of methane [CH4(g)] must be combusted to heat 1.00 kg of water from 25.0°C to 90.0°C, assuming H2O(l) as a product and 100% efficiency in heat transfer?
The energy required to break a single carbon-carbon bond is 348 kJ/mol. Calculate the minimum wavelength of light needed to break the C-C bond. Could UV lamps be used to break the C-C bond?
Determine the enthalpy change for the oxidation of ethanol to acetic acid, CH3CH2OH() + O2(g) -> CH3COOH() + H2O() given the thermochemical equations below.
each square foot of lawn accumulates 1150 new snow flakes every minute, how much snow (in kilograms) accumulates on your lawn per hour? Assume an average snow flake has a mass of 1.80 mg.
How reliable is the perfect gas law in comparison with the van der Waals equation? Calculate the difference in pressure of 10.00g of CO2 confined to a volume of 100cm3 at 25 degrees Celsius between treating it as a perfect gas and a van der Waals ..
A concentration of 0.5 ppm by volume SO2 in air is harmful to plant life. What is the percent by volume of this concentration
Water vapor will react reversibly with methane (CH4) to produce carbon monoxide and hydrogen gas. The equilibrium, with a Kc = 0.26, is established at 9270C in a 0.32L flask which contains 0.26mol CO, 0.091mol H2, and 0.041mol CH4. What is the con..
Sulfate becomes bound to four Al(CH3)3 fragments in the dianion [Al4(CH3)12SO4]^-2. Using the bond angles and lengths as a guide decide if the Al(CH3)3 groups alter the SO4^2- group significantly upon formation of the [Al4(CH3)12SO4]^-2 product. E..
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