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Consider the 100-MHz radio waves used in an MRI device.
Part (a) What is the wavelength, in meters, of these radio waves?
Part (b) If the frequencies are swept over a ±4.5 MHz range centered on 100 MHz, what is the minimum, in meters, of the range of wavelengths emitted?
Part (c) What is the maximum, in meters, of this wavelength range?
Choose the INCORRECT statement. a) When a half reaction is reversed, the sign of the potential is changed. b) reversing a half reaction makes it a reduction potential. c) each cell has a reduction half cell and an oxidation half cell.
a sealed balloon is filled with 1.30 l of helium at 23degc and 1.00 atm. the balloon rises to a point in the atmosphere
the osmotic pressure of the solution is 0.443 atm. What is the percent ionization of this acid? I got 20% but its wrong
A typical bathtub can hold 100 gallons of water. Calculate the mass of the natural gas that would need to be burned to heat the water for a tub of the is size from 65 degrees farenheight to 108 degrees farenheight. Assume that natural gas is pure m..
The yield of 2-bromohexane is much higher when the reaction mixture is stirred than when it is not. Why is this
Calculate the pKa value of the acid and determine the number of moles of acid initially present. b) When the reaction is complete, what is the concentration ratio of conjugate base to acid
Two different proteins X and Y are dissolved in aqueous solution at 37 C. The proteins bind in a 1:1 ratio to form XY. A solution that is initially 1.00 mM in each protein is allowed to reach equilibrium. At equilibrium, 0.18 mM of free X and 0.18..
Acetylsalicylic acid is a component in aspirin. Through running a titration experiment, how would an incomplete reaction of aspirin with added NaOH affect the calculated amount of acetylsalicylic acid in the aspirin tablet
Describe how to prepare BaSO4 by: a. an acid-base reaction b. a gas-forming reaction, and c. an oxidation-reduction reaction. The available starting materials are ZNCO3, HCl, Cl2, HNO3, Zn(OH)2, NaCl, ZN(NO3)2, and Zn.
A mole of sodium hydroxide has a mass of 40 g. In order to prepare a .1M solution, how many grams of sodium hydroxide must be added to 500 mL of water
What volume will 5.6 moles of Sulfur hexafluoride (SF6) gas occupy if the temperature and pressure of the gas are 128 deg C, and 9.4 atm?
what is the percent yield of the enzyme recovered in the purified fraction. what is the degree of purification (fold purification
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