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A system of 118.0 moles of an ideal gas in 2.3 m3 has a molar internal energy of U = 25.0 kJ/mol at 1.3 bar. What is the molar enthalpy content of the ideal gas?
If someone ate 6259 mL of snow, how much water would they have consumed? How many kJ would be required to bring it to body temperature?
The other isotope, having mass 46 amu, accounts for the other 83.9%. What should be the experimentally determined atomic weight for this hypothetical element?
A buffer is to be prepared with a pH of 4.5 from 0.1M solutions of sodium acetate and acetic acid. How many mL of 0.1M NaAc would have to be added to 100mL of 0.1M HAc to make the proper buffer s
The heat capacity of the bomb calorimeter is 34.65 kJ/K and the combustion of 1.765 g of ethanol raises the temperature of the calorimeter from 294.33 K to 295.84 K.
Question: Gas is contained in an 8.05 liter vessel at a temperature of 18.5 deg C and a pressure of 8.47 atm. Determine the number of moles of gas in the vessel.
An automobile fuel tank is filled to the brim with 56.0 liters (14.9 gallon) of gasoline at 11.5 deg C. Immediately afterward, the vehicle is parked in the Sun, where the temperature is 34.8 deg C.
The volume of an ideal gas is increased from 0.8m3 to 2.4 m3 while maintaining a constant pressure of 1000 Pa (1Pa=1N/m2). How much work is done by the gas in this expansion?
Suppose 0.380 kg of water initially at 45.0°C is poured into a 0.300 kg glass beaker having a temperature of 25.0°C. A 0.500 kg block of aluminum at 37.0°C is placed in the water, and th
Light of wavelength 669 nm is incident on a double slit. The angle between the central bright fringe and the second dark fringe is 4.90°. Determine the separation d of the slits.
A car of mass m is initially moving with a velocity v. The driver hits the brakes due to which the retarding force on the car is equal to F = -ke^(-bt). Find the time that it takes for the car to co
Question: A 24.0 kg gold bar at 27.0°C is placed in a large, insulated 0.800 kg glass container at 15.0°C with 2.00 kg of water at 25.0°C. Calculate the final equilibrium temperature.
If 600 j of heat are added to 50 g of water initially at 20 degrees C. How much energy is this in calories? What is the final temperature of the water?
The atom decays and ejects an electron of speed .48c relative to itself. What is the speed of the electron relative to the laboratory, if in the forward direction?
What is the percent difference, Δ, between the newtonian and the relativistic values for the momentum of a meteroid reaching the earth at a speed of 71 km/s?
A 54.0 g ice cube, initially at 0°C, is dropped into a Styrofoam cup containing 375 g of water, initially at 21.2°C. What is the final temperature of the water, if no heat is transferred
A pot containing 1.07 liter of water, initially at 23°C, is placed on a 1071 W electric heating element. How much heat must be supplied to the water to bring it to a boil?
A small bar magnet experiences a 2.1 x 10^-2N*m torque when the axs of the magnet is at 45 degree to a 6.00 *10^-2 T magnetic field. What is the magnitude of its magnetic dipole moment?
Calculate the energy difference between the ("spin up") and ("spin down") levels of a hydrogen atom in the 1 state when it is placed in a 1.60 magnetic field in the negative z-direction.
As the bubble rises to the surface, the pressure decreases and the volume of the bubble therefore increases. The temperature of the water is constant. Find the final volume of the bubble if its in
If the work function of aluminum is 4.3 eV, does the ensuing photon have enough energy to knock an electron out of aluminum? If so what is the wavelength of the electron that comes out of the alumin
11 g of sodium bromide NaBr is mixed with 9 g of butanol CH3CH2CH2CH2OH to yield 258 mg of bromobutane CH3CH2CH2CH2Br. Find the number of mole of all reactant involved in the reaction.
A 230.0 g piece of lead is heated to 80.0 deg C and then dropped into a calorimeter containing 633.0 g of water that initally is at 16.0 deg C. Neglecting the heat capacity of the container, find th
How much heat is required to change a 38.6 g ice cube from ice at -14.7 deg C to water at 65 deg C?
An analysis of the compound shows that it contains 41.8 % C, 4.7 % H, 37.3 % O and 16.3 % N. Calculate the molecular formula.