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An ancient club is found that contains 170 g of pure carbon and has an activity of 7.5 decays per second. Determine its age assuming that in living trees the ratio of14C/12C atoms is about 1.30 × 10-12. Note that the half life of carbon-14 is 5700 years and the Avogadro number is 6.02 × 1023
Solve the above problem in detail no word count
Draw a molecular orbital diagram showing the formation of the bond between two hydrogen atoms. Draw all the atomic and molecular orbitals, label them, and show how the electrons fill.
Assume that the specific heat of the solution is the same as that of pure water. Calculate delta(H) (in kJ/mol NH4NO3) for the solution proces.
Three 5 L flasks, fixed with pressure gauges and small valves, each contain 4 g of gas at 273 K. Flask A contains H2, flask B contains He, and flask C contains CH4. Rank the flask contents in terms of the following properties.
Problem- Using the appropriate Ksp values, find the concentration of K+ ions in the solution at equilibrium after 500 mL of 0.40 M aqueous Cu(NO3)2 solution has been mixed with 350 mL of 0.20 M aqueous KOH solution. (Enter in M.) (Ksp for Cu(OH)2 ..
Calculate the frequency of the light emitted when an electron in a hydrogen atom makes each of the following transitions.
lead poisoning in children used to be treated with intravenous injections of EDTA. If the concentration fo EDTA in the blood of a patient is 2.55 x 10^-8 M and the formation constant for the complex, [Pb(EDTA)]2-, is 2.00 x 10^18
Give the structure that corresponds to the following molecular formula and 1H NMR spectrum:
At 63.5oC the vapor pressure of water is 175 torr and that of ethanol (C2H5OH) is 400 torr. A solution is made by mixing equal masses of water and ethanol.
What is the balanced equation for a reaction between potassium iodide and lead II chloride
the brewing industry uses yeast microorganisms to convert the glucose c6h12o6. to ethanol c2h5oh for wine and beer. the
which of the following combinations of hybridization and molecular geometry is possible?1. sp3 trapezoidal2. sp3
mgnh4po4.6h2o loses h2o stepwise as it is heated. between 40c and 60 the monohydrate is formed and above 100 celcius
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