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You are with 11 other people on a boat at rest in frictionless water. The group's total mass is 858kg, How far does the boat move
Kc for this reaction is 5.1 at 400 degrees C. Calculate the equilibrium concentrations of the four gases if the initial concentration of each of them is 0.050M.
A helium-neon laser of the type often found in physics laboratories has a beam power of 4.00 mW at a wavelength of 633 nm. Calculate the intensity of the focused beam
Nitrogen forms several gaseous oxides. One of them has a density of 1.27 g L-1 measured at 764 mmHg and 150C. write the formula of the compound
An inductor with an inductance of 2.90H and a resistor with a resistance of 6.00? are connected to the terminals of a battery with an emf of 4.00V, Find the initial potential difference across the i
A sample of 1.0 mole of a perfect gas with cp= 20.8 J K-1 is initially at 3.25 atm and 310K. If it undergoes reversible adiabatic expansion until its pressure reaches 2.50 atm. Calculate the final v
A transformer is constructed that has 120 turns of wire on the primary side and 430 turns of wire on the secondary (load) side. what is the AC current measured on the secondary side
Name two organic compounds that cannot be extracted effectively from an aqueous solution by means of immiscible organic solvent
The atmospheric oxidation of nitrogen monoxide was studied at 183C with initial partial pressure of 1.000 atm of NO and 1.000 atm of O2. At equilibrium, Po2= .50-6 atm. Calculate Kp. 2 NO(g) +02 -&g
A 7.50 g piece of iron at 100 C is dropped into 25.0g of water at 22.0 C. Assuming that the heat is lost by the iron equals the heat gained by the water, determine the final temperature of the iron/
Calculate the wavelength of each of the following frequencies of electromagnetic radiation. 1105 kHz (typical frequency for AM radio broadcasting) (assume four significant figures)
Write the chemical equation and the Kb expression for the reaction of each of the following bases with water: ammonia, NH3; hydrogen sulfide, HS- ; hypochlorite ion, ClO-
person 1.6 m tall stands 5.2 m from a reflecting globe in a garden. How large is the person's image
a ballon filled with 0.505 mol of gas contracts reversibly from 1.0 L to 0.10 L at a constant temperature of 5.0 degree celsius. In doing so it loses 1270 J of heat. calculate w, q, and U for the pr
Calculate the wavelength of each of the following frequencies of electromagnetic radiation. 1105 kHz (typical frequency for AM radio broadcasting)
A candle is placed 1.270m in front of a converging lens. The image of the object is focused on a screen 1.376m behind the lens. What is the magnification of the image
When 2.00 g of hydrazine decomposed under constant-pressure conditions, 7.00 kJ of heat were transferred to the surroundings. What is delta H for the following reaction? 3 N2H4(l) --> 4 NH3(g) +
To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, Over what distance must the lens be movable
What is the internal energy (U) change of a system that emits 358 J of heat and receives 412 J of work
A irregular piece of metal has a dry mass of 5.7 kg. Once it is submerged it has an apparent mass of 2.4 kg. What is the density of the piece of metal
if the transition state has a smaller volume than the reactants (deltaV double dagger < 0) does the effectice rate constant of the reactant increase or decrease when the pressure is increased
When red light in a vacuum is incident at the Brewster angle on a certain type of glass, the angle of refraction is 31.0°. What is the Brewster angle
Light with a frequency of 5.3×1014 Hz is travelling through glass and strikes a glass/air interface as shown above. Angle X1 is 26.0o to the normal. What is the wavelength of this light in the
Calculate the pH at 25 degrees C of a 0.25-M aqueous solution of oxalic acid (H2C2O4). (Ka1 and Ka2 for oxalic acid are 6.5 x 10^-2 and 6.1 x 10^-5, respectively.)