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If the pressure during the reaction stays CONSTANT (but the volume can change, like in a piston or balloon), which of these reactions do work on the surroundings?
A (s) + B (g) --> C (g)
A (g) + B (g) --> C (s)
A (s) + B (aq) --> 2 C (g)
A (g) + B (g) --> 3 C (g)
A (s) + B (g) --> 2 C (g)
A (g) + B (s) --> C (s) + D (g)
The dipole moment of HBr (a polar covalent molecule) is 0.784 (debye), and its percent ionic character is 11.6 . Estimate the bond length of the bond in picometers.
An unknown compound with a molecular formula of C8H18 reacts with chlorine in the presence of light and heat. From the reaction, only one compound with the formula C8H17Cl can be isolated. What is the structure of the original unknown compound?
What is the composition in mole fractions of the gas mixture that is expelled? The solubilities of CH4 and C2H6 at 20 degrees celcius and 1 atm are .0175 g/L H20 and .059g/L H2O, respectively.
Calculate the osmotic pressure of the mannitol solution of part( b ) when it is measured against pure water, and compare it withthe osmotic pressure of the ideal solution.
The electron in the He+ ion is excited to the n = 2 principal state. What is the energy of the electron now
magnetite was found to contain 2.5698 g of iron and 0.9816 g oxygen. What is the empirical formula for this oxide of iron?
Draw the structure ( Fisher projection) of an optically inactive compound z, C4H6O6
In some solar-heated homes, heat from the sun is stored in rocks during the day and then released during the cooler night. (a) Calculate the amount of heat required to raise the temperature of 78.7 kg of rocks from 25.0°C to 43.0°C.
A sample of gas in a balloon has an initial temperature of 22 and a volume of 1610 . If the temperature changes to 58, and there is no change of pressure or amount of gas, what is the new volume, , of the gas?
If a 1.7 reaction vessel initially contains 730 of at 25 , what partial pressure of will be present in the vessel after 200 minutes?
Assume that the kinetic energy of a 1250 kg car moving at 115 km/h could be converted entirely into heat. What amount of water could be heated from 19 C to 48 C by the car's energy.
If you dilute 33.4 mL of a 3.5 M solution to make 244.0 mL of solution, what is the molarity of the dilute solution.
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