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Calculate the nuclear binding energy for 55/25 Mn in megaelectronvolts per nucleon MeV/nucleon.
Calculate the number of grooves per centimeter for your grating. Hint: if the groove spacing was 0.1 ft, then how many grooves would you have per foot?
A buffer was prepared by dissolving .200 mol of the weak acid Ha (ka 1.00x10^-5) plus .050 mol of its conjugate base Na+A- in 1.00L find the pH
To convert from the volume by percent of a gas to the mole fraction of a gas (i.e. problem 35 from chapter 9), why is it that all you have to do is divide the volume percent by 100%
the lead in lead pencils is actually almost pure carbon, and the mass of a period mark made by a lead pencil is about 0.0001g. How many carbon atoms are in the period.
A buffer is prepared by mixing 295 mL of 0.210 M HCl with 584 mL of 0.559 M ammonia (NH3). Given that the Kb of NH3 is 1.8 x 10-5, calculate the pH of the solution.
Application of Avogadro's law - To evaluate the volume of a gas using Avogadro's Law.
If a solution is made by adding 83 grams of sodium hyroxide to 750 ml of water what is the percent by mass of sodium hydroxide in this solutions ?
Consider the reaction 2KClO_3(s)\rightarrow 2 KCl(s)+3O_2(g) and the following table of values: Substance Delta G (kJ/mol) KClO_3(s) -296.3 KCl(s) -409.2 O_2(g) 0 State whether it would be worthwhile to investigate finding a catalyst to use in thi..
Find delta heat formation of butane. C4H10 + 13/2 O2 ---> 4 CO2 + 5 H2O. Delta H comb= -2881.9 Delta Heat formation of CO2 = -393.5kJ/mol Delta Heat formation of H2O = -241.8kJ/mol What is the kJ
The reaction that occurs here is the reaction of iodide ions with peroxydisulfate ions to produce iodine molecules and sulfate ions. Write the balanced net ionic equation for this reaction.
For a zero order chemical reaction, the A. half life period is directly proportion to the initial concentration of the reac-tants. B. plot of products concentration with time is a straight line through the origin
What are the values of [SO42- ], [Pb2+ ], and [Sr2+ ] in a solution at equilibrium with both substances? the answer is not 5.*10^-4 or 7.94*10^-4 because mastering chem keeps marking me wrong for that. Can you work it out nicely.
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