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The radius of an atom of gold (Au) is about 1.35A0
(a) Express this distance in nanometers (nm) and in picometers (pm).
(b) How many gold atoms would have to be lined up to span 1.0 mm?
(c) If the atom is assumed to be a sphere, what is the volume in cm3 of a single Au atom?
Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years
Question- Part 1) For the following unbalanced chemical equation, show the two half - cell reactions, and balance the equation
how much current is produced by the dissolution of .525 g of chromium per hour to produce chromium (III)?
Which one is pure of the following; Bronze and brass, Sugar, carbon dioxide and water, Soda water and brass, Gasoline
The resulting stream is cooled to 15 oC. Compute the fraction of water which condenses. The vapor pressure of water at 80, 60 and 15 oC is 47.36, 19.92 and 1.7 kPa, respectively. 1 atm=100 kPa.
llustrate on example between an ionic amino acid side group and the organic portion of your drug that has an ionic charge.
The analysis of oil from a reciprocation aircraft engine showed a copper content of 8.53 μg Cu/mL. Calculate the 90% and 99% confidence intervals of the results if it was based on (a) a single analysis, (b) the mean of four analyses, (c) the mean ..
A flask is filled with vapor by boiling a volatile unknown liquid in the flask. As it boils away, the vapor of the unknown pushes the air out of the flask through a tiny pinhole opening and eventually the flask is filled with an atmosphere compose..
Calculate the molar mass that would be obtained from the actual experimental data under the following conditions. The unknown is methyl propyl ether (CH3OC3H7)
determine the solubility of iron in mgl as fe in a solution in equilibrium with feoh3 s ironiii hydroxide 10-2m total
how much a 6m na2co3 stock solution do you need to make 100 ml of a 10 na2co3 working solution? describe how you would
How much heat (kJ) is absorbed/ released? b. What is the change in internal energy (kJ) if the reaction results in a volume change of - 2.78 L?
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