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the vapor pressure of water is 17.5 mmHg at 20 degrees Celcius, and 355.1 mmHg at 80 Celcius. Calculate the boiling point of water at 760 mm Hg.
The two objects have the same mass. If they are to have the same total kinetic energy, what should the ratio of the cylinder's angular speed to the spherical shell's angular speed be?
Consider a solution of a weak acid at a pH equal to its pKa. By how much would the pH change, and in which direction, if we added to this solution enough base to neutralize 10% of the total acid?
find the time required for the total pressure in the system containing N2O5 at an initial pressure of 0.1 atmospheres to raise to 0.145 atmosphere
What is the gas pressure (in atm) inside a 2.43-L bulb that contains 2.88-g of Ne at a temperature of 32.9 C?
How much heat is absorbed when 45.00 g of C(s) reacts in the pressence of excess SO2(g) to produce CS2(l) and CO(g) according to the following chemical equation?
An apparatus to be used in a decomposition study was filled with N2 gas at 400.00 mm Hg and 400.0 deg C. The volume of the apparatus was 400.0 mL.
Arrange the molecules in order of decreasing boiling point Molecules are methane, dimethyl ether
A certain first order reaction has a rate constant of 0.0215 s-1 at 24 degrees C. What is the value of rate constant at 70 degrees C if Ea=90.0 kJ/mol.
The enthalpy of combustion of acetylene C2H2 is C2H2(g) + 5/2O2(g) ->2CO2(g) + H2O(l) H°rxn= -1299 kJ Calculate the enthalpy of formation of acetylene, given the following enthalpies of formation H°f[CO2(g)] = -393.5 kJ/mol ,H°f[H2O(l)] = -285.8 k..
What is the percent by mass of oxygen in a gaseous mixture whose molar composition is 0.500% CO2 and 99.500% air? The composition of air is 21% mole O2
The total amount of water runoff from the road is equal to a volume that would make the water on the roadway be at a depth of 0.4 inches if it all stayed on the roadway.
What mass of MgCl2 in grams must be added to 1.00 kg of water to prouce a solution that boils at 103.0 degrees celsius
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