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In this experiment, you bend your elbow and stack coins on top of your arm, Which coins are the easiest to catch
What is the pH of 0.0045 M solution of Aluminum Hydroxide. Al(OH)3 dissociates in a complicated why so I am not sure if I simply find the -log of the concentration
In a solution of NH3, the concentration of NH3 is 0.01 M, Kb is 1.8 x 10-5. What is the concentration of the hydroxide ion
If an unknown is water soluble, why is it unnecessary and potentially misleading to perform (and interpret) the result of the solubility of this unknown in 5% HCl.
How do the requirements that t and v are constant enter the derivation for delta Asys <0 for a spontaneous process
In the emission spectrum of helium, there are strong lines at wavelengths of 447.1 nm, 501.6 nm, and 587.6 nm. Using the Balmer-Rydberg equation, determine the values of nf for each emission.
Calculate the enthalpy change for the neutralization reaction. Calculate the experimental error compared to the accepted your value in question 2.
In a purely inductive circuit of 36 mH, the freq is 71 Hz and the maxium voltage is 317 V. Find the rms current in the circuit
A copper flask with a volume of 80 cm^3 is filled to the brim with olive oil. If the temp of the system is increased from 8C to 52C, how much oil spills
A cylnder holds .5 moles of an ideal gas at temp 334K. The gas expands isothermally from an initail volume of .03 m^3 to a final volume of .4m^3
This half cell is connected to a SHE half-cell. The measured potential for this cell is 0.476 V at 25 degree C. What is the experimental value of the solubility constant for silver oxalate
Two metal rods, silver and copper, are attached to a steam chamber with a temp 100 C, at one end and an ice bath ( 0 C ) at the other end. How much heat flows through the two rods in 60s
Calculate the number of moles of copper oxidized and moles of electrons that passed through the cell. Calculate the total charge (coulombs) that passed through the cell.
When a solution of sodium sulfate, Na2SO4, adjusted to a pH of 7 is electrolyzed, red litmus and a gas is evolved in the anodic chamber. In the cathodic chamber, red litmus turns blue and a gas is a
Without referring to the appendix, calculate the quantity (Delta rG - Delta rA) for the following reaction at 298 K: C(s) + CO2(g) --> 2CO(g) Assume ideal gas behavior.
How many moles of oxygen are in an inflated basketball? Pressure in the ball is 181kPa, the temp is 310K, and diameter of ball is 36 cm
A 2.0g metal ball that carries a charge of 10uC is placed into an electric field, what is the electric potential difference between point A and point B
Now consider a sample that consists of four spheres, each with a different mass: blue mass is 4.00 g, red mass is 3.75 g, green mass is 3.00 g, and yellow mass is 1.25 g. Calculate the average mass
What is the distance b between the beam formed by reflection off the top surface of the glass and the beam reflected off the bottom surface of the glass
A 4.2cm tall object is placed 27cm in front of a spherical mirror. It is desired to produce a virtual image that is upright and 3.0cm tall. What is the radius of curvature of the mirror
A beam of light is emitted 8.2cm beneath the surface of a liquid and strikes the surface 7.2cm from the point directly above the source. what can you say about the index of refraction of the liquid
Write a reaction mechanism for the dehydration of 4,5-dimethyl-3-hexanol in concentrated phosphoric acid. Use curved arrows to show electron movement and clearly show the major product formed.
A charge q=-1.0 nC is instantaneously at a place where the electric field is 45 kN/C due east. hat are the magnitude and direction of the electron force on this charge
An electron moves from point A where the potential is Va=+20.0kV to point B where the potential is Vb=- 40.0 kV. what was the change of the system's electric potential
A water molecule floating in the air loses one electron, becoming an ion, What is the magnitude of the electric force between the electron and the water ion