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Assuming that brackish water has the same density as pure water and containsonly sodium chloride, estimate the osmotic pressure of brackish water at 298 K.
a.) A nickel surface is exposed to light of wavelength 235 nm. The work function of Ni is 5.1 eV. What is the maximum speed of the photoelectrons emitted from the surface? b.) If the Ni is at a temp
Calculate the partial pressure of propane in a mixture that contains equal numbers of moles of propane (C3H8) and butane(C4H10) at 20 °C and 203 mmHg. (R=0.082 L-atm/K mol)
If the slit separation were narrowed to 0.35 mm, what is the separation of the fringes?
A solution was made by adding 75.0 g of sucrose (C12H22O11) to500.0 g of water at 20 degrees C. How much is the vapor pressure of the solution reduced from that of water by the addition of the sucro
The bulb of a pipet is placed into hot water and is left for 2minutes. The pipet is then flipped over into cool water. Water is then pulled into the pipet.
Calculate the amount of heat in kilojoules needed to heat 346g of liquid water from 0C to 182C. Assume the specific heat of liquid water is 4.184 J/g x C and that steam is 1.99 J/g x C
A power station delivers 530 kW of power at 12,000 V to a factory through wires with total resistance 3.0 . How much less power is wasted if the electricity is delivered at 48,000 V rather than 12,0
It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time.Find the linear veloc
A very large nonconducting plate lying in the xy-plane carries a charge per unit area of 8s. A second such plate located at z = 1.00 cm and oriented parallel to the xy-plane carries a charge per uni
In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.2 x 10-17 N during the first 1.9 cm of the tube's length; then they move at essentially constan
A charge q1 = 17.0 µC moves with a speed of 3.00 multiplied by 103 m/s perpendicular to a uniform magnetic field. The charge experiences a magnetic force of 7.45 multiplied by 10-3 N.
A 529.0 g mass oscillates with an amplitude of 11.1 cm on a spring whose spring constant is 29.5 N/m. At t = 0.00 s the mass is 6.23 cm to the right of the equilibrium position and moving to the rig
A transition metal compound contains a cobalt ion, chloride ions,and water molecules. The H2O molecules are the ligandsin the complex ion and the Cl ‾ ions are the counterions.
A spherical conducting shell has a charge of -25 µC on its outer surface and a charged particle in its hollow. If the net charge on the shell is -21 µC, what is the charge (a) on the inn
Calculate the Gibbs energy of activation, the entropy of activation, and the enthalpy of activation for this decomposition (at 60o C)
A floating ice block is pushed through a displacement d = (11 m) i - (11 m) j along a straight embankment by rushing water, which exerts a force F = (169 N) i - (160 N) j on the block. How much work
A 75.0 g sample of a solution known to contain 23.8 g of glucose. Calculate the mass percent of glucose in the solution.
Using this information, determine how long it would take for the Astronaunts traveling at 24,000 mph to perform an emergency burn and return to Earth traveling at 24,000 mph.
An industrial process can be used to change ethylene (CH2CH2 ) into ethanol ( C2H5OH ). The process uses acatalyst, high pressure ( 6.8 MPa ), and temperature of 3 x10^3 degrees K. What is the densi
The sun radiates energy into space at the rate of 3.9 x1026 J/s. Calculate the rate of mass loss from the sunin kilograms per second (kg/s).
A cart of mass 3.2 kg is moving with a velocity of 15.2 m/s. It makes a head-on perfectly inelastic collision with a stationary cart B with mass 9.3 kg causing them to travel with a velocity 7.26 m/
Suddenly she needs to consult her physics book so you throw it to her with speed 8.6 m/s relative to your spacecraft. She is at rest relative to the spacecraft just before catching the 2.3 kg book.
A very massive object traveling at 100 m/s in the -z direction strikes a very light object that is initially at rest. If the collision is totally elastic, what is the velocity of the light object?
The label on liquid Gaviscon states that each tablespoon (15 mL)contains 95 mg of aluminum hydroxide and 412 mg of magnesium carbonate. How many moles of hydronium ion can be neutralized by one tabl