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The mass of the sphere in #2 is 456 g. Calculate the density of that sphere. Please show work.
What is the change in volume of the balloon as it ascends from 1.00 atm to a pressure of 220. torr?
Calculate (a) the work done when the gas expands isothermally against a constant external pressure of 200 Torr until its volume has increased by 3.6 dm3.
A 600-eV electron and a 300-eV electron trapped in a uniform magnetic field move in circular paths in a plane perpendicular to the magnetic field. What is the ratio of the radii of their orbits?
For each of the following positive ions use the concept that a chemical compound must have a net charge of zero to predict the formula of the simple compounds that the positive ions would form with
What is the approximate pressure decrease in going 35 m above the surface? Air at 20° C has density of 1.2 kg/m3.
What properties of matter only apply to solids? What properties of matter only apply to liquids and/or gasses? Any property that applies to all states of matter?
Unit cell problem of copper (Cu) is a face-centered cube that has an edge lenth of 3.62 A (note: 1A=1*10^-10 m). Determine the volume occupied by one mole of copper atoms, , in terms of mL/m
The metal brass is really a solution of what two elements?
A deuteron is accelerated from rest through a 10-kV potential difference and then moves perpendicularly to a uniform magnetic field with B = 1.6 T. What is the radius of the resulting circular path?
Describe a procedure for measuring the density of a liquid such a t-butanol. Your only available tools are a graduated cylinder and a top loading balance.
Two long parallel wires each carry a current of 5.0 A directed to the east. The two wires are separated by 8.0 cm. What is the magnitude of the magnetic field at a point that is 5.0 cm from each of
Based on their activation energies and energy changes and assuming that all collision factors are the same, which of the following reactions would be fastest and which would be slowest?
Light of wavelength 631 passes through a diffraction grating having 485. What is the angle of the bright spot farthest from the center?
The loop is rotated from a position of zero magnetic flux to a position of maximum flux in 19 ms. What is the average induced emf in the loop?
If the average kinetic energy of NH3 is 7.1x10^-21 J/molecules at 70 degrees celcius, calculate the root-mean-square speed of Ne atomes in m/s.
The activation energy of a certain reaction is 44.5kJ/mol. At 21, the rate constant is0.0110 s^-1 . At what temperature in degrees Celsius would this reaction go twice as fast?
Red light from three separate sources passes through a diffraction grating with 5.50×105 lines/m. The wavelengths of the three lines are 6.56 (hydrogen), 6.50 (neon), and 6.97 (argon). Calcula
The potential difference between the plates of a 2.90-µF capacitor is 80 V. How much energy is stored in the capacitor?
Consider a hypothetical reaction in which A and B are reactants and C and D are products. if 15grams of A completely reacts with 12grams of B to produce 14grams of C, how many grams of D will be
For the reaction SO2(g) + NO2(g) = SO3(g) + NO(g), the equilibrium constant is 18.0 at 1,200 degrees C. If 0.050 M mole of SO2 and 0.10 M moles of NO2 are placed container, what concentration os SO
What determines the direction of heat flow when two objects at different temperatures are placed in thermal contact?
What molecular ion peak would you expect for compounds having each of the following molecular formulas?
Question: A sinusoidal voltage having a maximum amplitude of 625 V is applied to the terminals of a 50 ohm resistor. Find the average power delivered to the resistor.
A flywheel turns through 28 rev as it slows from an angular speed of 6.1 rad/s to a stop. (a) Assuming a constant angular acceleration, find the time for it to come to rest. (b) What is its angular