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Suppose that the atomic mass unit (amu) had been defined as one-sixth of the average mass of an atom of fluorine instead of one-twelfth of the mass of an atom of carbon-12.What would the average atomic mass of phosphorus be on this new scale?What would the value of Avogadro's number be on this new scale?
How grams of potassium permanganate are need to decolorize one gram of 2-pentene in basic solution.
A 0.0989 g sample of an alcohol is burn in oxygen to yield 0.2160 g Co2 and 0.1194 g H2o. Calculate the mass percentage of C, H, and O in the compound
calculate delta s values for following reactions. in each case, account for the sign of delta s. a) C2H4(g) + H2(g) ---> C2H6(g)
Consider a solution of carbonic acid, H2CO3. (a) Calculate the H3O+ ion concentration of a 0.15 M solution of carbonic acid.
The pH after adding 10. mL of .10 M NaOH is 4.31. Calculate the total volume of .10 M NaOH that the buffered sample can absorb
Calculate the concentrations of all ions in the solution after reaction. Check your concentrations to make sure that the solution is electrically neutral
A compound contains 43.64% P with the remainder being oxygen. What is the empirical formula of the compound?
In the column chromatography portion of an experiment, a student uses different solvents or solvent mixtures to elute the column for separation of your product mixture.
How do the spacings of the energy levels of X and H compare, where X has one electron like the H atom but has different energy levels and for X: E = - (RH / n3) and RH is the same as H (2.179 ×10?18J)?
the experiment is then repeated with the copper immersed in a stream of water that maintains its temp at 293. Calculate the change in entropy of the copper and the water in this case.
solving this question helps the student to understand how to find the limiting reactant alternate method and how to
A mercury spill occurs in a lab whose temperature is 30 Degrees Celsius. The vapor pressure of gaseous mercury at this temperature is 3.65 x 10^-6 atm
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