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A positive point charge Q1-52-6 = 2.7×10 C is fixed at the origin of coordinates, and a negative point charge Q = -5.6×10 C is fixed to the x axis at x=+2.0m
Find the location of the place along the x axis where the electric field due to these two charges is zero.
Express your answer using two significant figures.
What are the equilibrium concentrations of C6H5NH2, C6H5NH+3 , Cl-, H+, and OH- in an aqueous solution prepared by combining 50.0 mL of 0.0400 M C6H5NH+3 Cl- and 50.0 mL of 0.0100 M KOH? Kb = 7.4 x 10-10 for C6H5NH2.
The solubility of N2 in blood at 37°C and at a partial pressure of 0.80 atm is 5.6 10-4 mol/L. A deep-sea diver breathes compressed air with the partial pressure of N2 equal to 3.6 atm.
Citrus, Inc. is a medium-sized producer of citrus juice drinks in Florida. Until now, the company has confined its operations and sales to the United States
For MgO, which has the NaCl structure, the unit cell edge is 4.21 Angstroms. Use the approach of Pauling to evaluate the radii of Mg^2+ and O^2-
The tosylate of (2S,3R)-4-methyl-3-phenylpentan-2-ol undergoes an E2 elimination on treatment with sodium ethoxide. Draw the structure of the alkene that is produced.
what are the concentrations of [NAD+] and [NADH] in the cells? Under oxidative stress condition, the cellular redox potential is shifted to -290 mV. What will be the concentrations of [NAD+] and [NADH] in this cell under this oxidative stress cond..
calculate the radius of a chloride ion. find values reported for the ionic radii or sodium and chlorine in a refernce book, and compare them with the values you determined. is the differnece significant?
Draw the structure of ninhydrin and of the colored product when it (ninhydrin) reacts with amino acids (search the internet)
Problem- How much heat (in kJ) is evolved (under standard conditions) when 83.84 g of copper reacts to form copper(II) oxide
In ethanol, with an absorbance of 1.210 (no units) at a wavelength of 530 nm. At this wavelength, the extinction coefficient of rhodamine 6G in EtOH is 116,000M^-1 cm^-1. If I have a 0.100 M solution of rhodamine 6G, what pathlength cell will be n..
5000 joules of energy are added to 108 grams of silver, Ag, at 20°C. What is the final temperature of the metal? (the specific heat of silver is 0.235)
an An automobile gasoline tank holds 42 kg of gasoline. When the gasoline burns , 168 kg of oxygen are consumed and carbon dioxide and water are produced. What is the total combined mass of carbon dioxide and water that is produced
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