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If you report two measurements of mass, 7.42 g and 7.56 g, are the measurements accurate? are they precise?
Draw as many resonance structures as you can for the following nitrogen-containing compounds. Not all will obey the octet rule. (a) N2O (b) NO (c) NO2
what is the percent of ethanol in the vodka, based on the concentraion od Cr^3+. PLEASE I AM so stuck! HELP this is the formula used 16H^+ + 3CH2CH2OH + 2Cr2O7^2- = 3CH3CO2H + 4Cr^3+ + 11H2O.
Chromatography in the presence of 6 M guanidine hydrochloride and 10mM 2-mercaptoethanol yields peaks of Mr 34000 and 26000. Explain what can be determined about the structure of this protein from this data.
Using the given standard reduction potential, calculate the amount of OF2 that is produced, and the electrode at which the OF2 is produced, upon the passage of 0.240 faradays through an aqueous KF solution.
A 0.00100 mol sample of Ca(OH)2 requires 25.00 mL of aqueous HCl for neutralization according to the reaction below. What is the concentration of the HCl
Draw additional molecules of sulfanilamide and hypothesize the intermolecular interactions that are most important for providing a stable and selective crystal structure
consider the cell prepared with 2.0 m cd2 and 0.45 m zn2 solutionszns cd2aq --- zn2aq cdsa calculate the standard
the element lithium consists of two naturally occurring isotopes with relative abundances of 7.42 and 92.58. the atomic
Write the balanced equation for the following reactions. Use only the following descriptions: neutralization, precipitation, gaseous, combustion, synthesis, single displacement or decomposition
A buffer is made by dissolving 0.037 mol of potassium fluoride in 135 mL of 0.0237M hydrofluoric acid. Assume no volume change when the salt is dissolved. Calculate the pH of the buffer.
Consider the lewis structure for the polyatomic oxyanion shown below, where X is the element from the 3rd period (Na- Ar). By changing the overall charge
how a water molecule (point group C2V) would look if it was rotated C2 about each of the x, y, and z axes and if you can draw a picture. The character table would define these rotations as Rx, Ry, and Rz.
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