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starting with solid sodium chloride, how would you make one liter of 2.000 ppm sodium chloride solution
If the concentration of mercury in the water of a polluted lake is 0.375 ug (micrograms) per liter of water, what is the total mass of mercury in the lake, in kilograms, if the lake has a surface ar
Calculate the pressure and temperature at which 1.0 mol of H2O, HCl, and C6H6 corresponds to the same states as 1.0 mol of CH4 at 2.00 atm and 298
The beam emerging from a ruby laser (wavelength 694.3 nm) passes through a circular aperture 4.7 mm in diameter. If the spread of the beam is limited only by diffraction, what is the angular speed of
The pulley in the illustration is a uniform disk of mass 2.8 kg and radius 0.24 m, which is free to rotate without friction. What is the acceleration of the falling block
Two golf balls are glued together and rotated about an axis through the point where they are joined. What is the moment of inertia of the pair of golf balls around the chosen axis
The top of the pool table is 0.850 m from the floor. The placement of the tape is such that 0 m is aligned with the edge of the table, calculate his break shot speed
Calculate the power of the corrective lens required by a hyperopic eye whose near point is at 100.0 cm
A two-slit pattern is viewed on a screen 1.08 m from the slits. what is the total width of the central bright fringe
A 1,576-kg car is moving down a road with a slope (grade) of 11% while slowing down at a rate of 3.6 m/s^2. find direction and magnitude of the frictional force
A horizontal incident beam consisting of white light passes through an equilateral prism. What is the dispersion (thetaV -thetaR) of the outgoing beam
A town is planning on using the water flowing through a river at a rate of 5.0 x 106 kg/s to carry away heat from a new power plant, What is the maximum power this plant can produce
A metal rod with a diameter of 2.30 cm and length of 1.10 m has one end immersed in ice at 32oF, what is the thermal conductivity of this metal and Identify the metal
The 1800-turn coil in a dc motor has an area per turn of 1.1 multiply.gif 10-2 m2. compute the current in the coil
Calculate the standard free-energy change for the following reaction at 25 °C 2Au+3Ni---->3Au+3Ni2+
Calculate velocity of the skydiver of mass m=80kg as a function of time. The air drag coefficient D=100g/m=0.1kg/m.
Calculate the diameter of a methane molecule with a van der waals value of .069L/mol for the excluded volume b. I got the answer to be 3.01A and was just wondering if I was right or wrong
A child pulls an imaginary friend in a wagon at constant speed for 10m with a force of 16N. how much work does the child do
How many mL of 6 M sodium hydroxide must be added to 5 mL of 1.5 M HCl to just react completely with all of the HCl
A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 343 K. what is the mass of helium present
Calculate the standard potential for this cell at 25 °C. Standard reduction potentials can be found here.
You're a marine biologist concerned with the effects of sonic booms on plankton, and you need to estimate the altitude of a supersonic aircraft flying directly over you at 1.1 times the speed of sou
According to the law of conservation of mass, what is the mass of oxygen that reacted with the iron. Calculate the number of moles of oxygen in the product.
0.2 grams of HCl is dissolved in 0.8 grams water. the density of the solution formed 1.10 g/mL. What is the molarity of the solution
On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.650m from the axis of rotation of the stool. Compute the kinetic energy of the system after the