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Describe the points of rutherford's model for the nuclear atom and how he tested this model. based on his expiriments, how did ruthford envision the structure of an atom?
A system consists of three particles with these masses and velocities: mass 3.2 kg, moving north at 3.1 m/s; mass 3.9 kg, moving south at 4.8 m/s; and mass 7.2 kg, moving north at 1.8 m/s. What is t
A hot air balloonist rising vertically with a constant velocity of magnitude 5.0 m/s, releases a sandbag at an instant when the balloon is 40 m about the ground. After its released the sandbag is i
Draw the Newman projections for the anti and gauche forms of 1,2-dibromoethane. The molecule has a dipole moment of 1.0 D.
A supply plane flies at 55m/s and has a constant height of 250m towards a point directly above a victim, where a crate is to land. a) At what angle should the pilot aim when he releases the crate?
What mass of salt would have to be added to 1000.0 mL of water in order to raise the boiling point of the solution by 0.5 C? Assume the ideal van't Hoff factor for NaCl.
Two runners start simultaneously from the same point on a circular 200m track and run in opposite directions. one runs at a constant speed of 6.2m/s and the other runs at a constant speed of 5.5 m/s
The osmotic pressure of the solution is measured to be 8E-4 bar at 25 C. What is the calculated molar mass of the protein?
What molal concentration of salt is needed to lower the freezing point to -3.97 C? Assume that the solution is ideal, and that the van't Hoff factor for NaCl is the expected (ideal) value.
An electron with a speed of 6.00*10^6 m/s collides with an atom The collision excites the atom from its ground state (0eV( to a state with an energy of 3.70 eV. What is the speed of the electron aft
The rate constant for the equation is 0.0406 M-1 s-1. We start with 0.236 mol C2F4in a 3.00-liter container, with no C4F8initially present. What will be the concentration of C2F4after 3.00 hours?
Mayan kings and many school sports teams are named for the puma, cougar, or moutain lion felis concolor, the best jumpr among animals. It jumps to a height of 10.3ft when leaving the ground at an an
When a nucleus of 240^Pu undergoes fission, it breaks into two smaller, more tightly bound fragments. Calculate the binding energy per nucleon for 240^Pu.
What will be the pressure of the gas if the temperature rises to 94 degrees Celsius and while the volume decreases to 12 liters?
In a double-slit experiment with monochromatic light, a thin sheet of transparent material of thickness t and index of refraction n is placed over one of the slits. What now is the condition for the
If a particular alloy is prepared by mixing 11.2 moles of copper with 1.5 moles of nickel, what is the mass percentage of nickel in the alloy?
Monochromatic light of wavelength 510 nm is incident on a diffraction grating with 5000 lines/cm. What is the highest-order spectrum that can be observed?
What is the value of Kf for acetic acid, given that its freezing temperature is 16.6 C and its density is 1.049 g/mL? Experiments show that a solution prepared by dissolving 5.00 grams of water.
If the work function for a metal is 1.8 eV, what would be the stopping potential for light having a wavelength of 400 nm? What would be the maximum velocity of the emitted photoelectrons at the meta
What are (a) the energy, (b) the momentum, and (c) the wavelength of the photon that is emitted when a hydrogen atom undergoes a transition from the state n = 3 to n = 1?
The complete combustion of octane, C8H18, the main component of gasoline, proceeds as follows. How many moles of O2 are needed to burn 1.50 mol of C8H18?
Given the capacitors, C1 = 2muF, C2 = 1.5 muF and C3 = 3muF, what arrangement of parallel and series connections with a 12-V battery will give the min voltage drop across the 2muF capacitor? What is
One mole of an ideal diatomic gas is heated from a temperature of 22 degrees C to a temperature of 95 degrees C at constant pressure. How much work in joules is done by the gas?
One mole of an ideal monatomic gas is expanded adiabatically and quasi-statically from a pressure of 1,172 kPa and a temperature of 273 K to a pressure of 279 kPa. What is the final volume of the ga
Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + H2O(l) --> Ca(OH)2(s). In a beaker, 1.45 g of H2O is added to 1.50g of CaO.