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A piece of charcoal used for cooking is found at the remains of an ancient campsite. Find the age of the charcoal in years
Light of two different wavelengths is used in a double-slit experiment. What is the wavelength of the other light
Determine the rate at which the electric field changes between the round plates of a capacitor, 5.6 cm in diameter
A 5kg block initially at rest is pulled to the ight along a horizontal surface by a constant, force of 30N acting at 53 degrees above the horizontal. Find the net work done on the block
If a piece of irion (c=450 J/ kg C) at 65 C is dropped into 0.250 kg of ethyl acohol at 25 C and the final temperature of the two comes to 35 C what was the mass of the piece of iron
In some industrial processes, sulfite is added to remove dissolved O2 to prevent corrosion of pipes. Write the balanced overall chemical reaction for reduction of dissolved O2 by sulfite (SO32-).
A person with a near-point distance of 37 cm is able to get a usable magnification of 15 with a particular magnifying glass. What is the friend's near-point distance
A neutral pie-meson is particle that can be created by accelerator beams. If one such particle lives 1.40 x 10^16 s as measured in the laboratory, what is its velocity relative to the laboratory
The rate law is : Rate = k [ I-]^a [ BrO3 -]^b [H+]^c Reaction time in run number 1 31 Reaction time in run number 2 31 Reaction time in run number 3 15 Reaction time in run number 4 15 Calculate th
In the circuit show in the figure, S1 has been closed for a long enough time so that the current reads a steady 3.5A. What is the maximum charge that the capacitor will receive
Choose the correct answer of the following, explain why it is true, and explain why the other choices are untrue: (A) high pE is associated with species such as CH4, NH4+
In an L-C circuit, C=3.21*10^-6 F and L=86.0mH. During the oscillations the maximum current in the inductor is .851mA. What is the maximum charge of the capacitor
Calculate the pressure of oxygen for a system in equilibrium in which [NH4+] = [NO3-] at pH 7.00
What quantity of useful work can be obtained when Mg is added directly to the beaker of HCl. How can you harness this reaction to do useful work
Why is it more difficult to precipitate cupric acetate (verdigris) than cupric carbonate hydroxide (malachite)
at some point in space,the x and y components of the electric field are Ex= 1.73 N/C, respectively and Ey= 3.75 N/, respectively. What is the net charge of the particle
A human hair is placed directly in front of the opening of a laser pointer. The light has a wavelength of 647.8 nm. Determine the approximate thickness of the hair
Titanium occurs in the magnetic mineral ilmenite (FeTiO3), which is often found mixed up with sand. The ilmenite can be separated from the sand with magnets. The titanium can then be extracted from
a metal sulfide, M2(CO3)3, has a Ksp of 4.15 x 10^-42. What is the molar solubility of this sulfide in water? Assume the sulfide dissolves ideally (ignore hydrolysis effects).
A camera lens used for taking close-up photographs has a focal length of 21.5 mm. The farthest it can be placed from the film is 30.0mm. What is the closest object that can be photographed
In a photoelectron spectrometer the ionizing radiation has a wavelength of ? = 0.772 nm. How much enegy is present in a mole of these photons
A 0.1276 g sample of a monoprotic acid (molar mass=1.10 x 10^2) was dissolved in 25 mL of water and titrated with 0.0633 M NaOH. After 10 mL of base had been added, the pH was determined to be 5.57.
The plate seperation of a parallel plate capacitor is 1mm. The area of the plates is 10cm2. Determine the energy stored in the capacitor with the dielectric
What is the buffer component ratio, ([BrO-]/[HBrO]) of a bromate buffer that has a pH of 7.88. Ka of HBrO is 2.3 x 10-9
A 3.5-cm tall object is viewed through a converging lens. When the lens moves from one place to another, the orientation of the image changes from upright to inverted. How far from the object does t