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Calculate the effective radiation dosage (in Sieverts) for a 85-kg person who is exposed to 7.3 × 109 particles of alpha radiation. Assume that 85% of the radiation is absorbed, each alpha par
What masses of sodium chloride,magnesium chloride, sodium sulfate,calcium sulfate, calcium chloride, potassium chloride, and sodium bicarbonate are needed to produce 1 L of arificial seawater
What is the maximum mass, in gram, of Fe3O4, that can be produced from this reaction? B)If 3.26 g of Fe3O4 are actually made, what is the percent yield of this process
List all compounds that are present when reaction is complete. C) Determine the theoretical yield of H3PO4 based on the starting materials and D) Determine the mass, in grams, of each compound prese
Draw the structures of the E and Z stereoisomers of 1,4-diphenyl-2-butene-1,4-dione and label which is the cis and which is the trans
NaNO3(s) + NaNH2(s) yields NaN3(s) + NaOH(s) + NH3(g) What mass of NANO3 and NANH2 must be used to prepare 15.0 g of sodium azide, assuming that the reaction runs with an 82.1% yield
compute the uncertainty in the volume of titrant delivered. Report your result as the relative standard deviation in parts per thousand, to the nearest 0.1 ppt.
what are the boiling point and freezing point of a 1.47m solution of napthalene in benzene
In a synthesis experiment you obtain a sample of product on which you do a melting point determination and find a melting point range of 108.0 to 114.3 degrees Celsius.
describe one or more simple chemical tests that would distinuish acetaminophen from ibuprofem
Indicate the ionic species that predominates at pH 4, 8, and 11 for (a) ammonia and (b) phosphoric acid.
What mass of oxygen is needed to burn the butane in the lighter completely. How many moles of CO2 form when all of the butane is the lighter burns. How many molecules of gas form when the butane in
Determine the structure of compound U. Be sure to include a concise discussion of the reasoning. Construct tables summarizing the IR and 1H NMR data, and assign the peaks in the IR and NMR spectra t
Determine the moles of benzene that would be needed to completely react with 0.445 moles of oxygen
Determine the number of moles of CO2 that could be produced from the combustion of 0.00993 moles of Benzene
Antibonding MOs always have at least one node. Can a bonding MO have a node. If so draw an example.
Determine the number of moles of oxygen that would be needed to completely combust 0.0350 moles of benzene
A pt has a blood Ca level of 4.6 mEq/L If 1mol Ca2+= Eq Ca2+ what is the blood calcium levle in mg/dl
What is the pH of a solution containing 50.00 mL of 1.0 M HCl and 50.00 mL of 1.0 NH3? The Kb for NH3 = 1.8 x 10-5.
The good professor accidently grabs the Na2HPO4 bottle. What pH did professor Whoops expect the solution to be? what was the actual pH of the solution as made
If the lead level in some drinking water is 15pbb how many ml of the water would one have to drink in order to ingest 1 gram of lead
Using graphical techniques, which form of chlorendic acid (neutral, mono-anionic, or di-anionic) is not responsible for the inhibitory effect
What is the pH of a solution made by mixing 25.00mL of 0.200M CH3COOH with 10.00mL of 0.200M NaOH? Ka of acetic acid is 1.8 x 10^-5.
Find the equilibrium pH of a 10^-3 M NaCN solution by using graphical methods, try to find the equilibrium pH with the charge balance and separately with the proton condition.
Show that the proton condition for a NH4Cl solution is a linear combination of the mass balance equations and the charge balance equation.