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The equilibrium-constant expression for a gas reaction is Write down the balanced chemical equation corresponding to this expression.
Identify the radioactive decay constant of CS-137 (1/2 life=30.07yrs).Determine the activity in units of Becquerel's and curies for a sample which is having 2x10^18 atoms.
Determine the difference in slope of the chemical potential against a temperature on either side of (a) the normal boiling point of water (b) the normal freezing point of water
You have 6 grams of molecule X in 100 mL water. The solubility of molecule X in ether is 200 g/L. The solubility of molecule X in water is 70 g/L. Determine how much of molecule X will be acquired b
If the Cu (NO3)2 solutions contains about 6gCu2+ per liter, determine the numbers of micrograms of Cu2+ion are there in one spot? In an experiment, it takes about 10microliters of solution t
If the heat released during condensation goes only to warming the iron block, determine the final temperature in Celsius of the iron black? Assume that 0.88 of water condenses on a 75.0-g block of
Calculate the atomic radius of gold if it crystallizes in a face-centered lattice and which is having a density of 19.4g/cm^3
The amount of carbon-14 remaining in the sample which weighs D is given by X(t)=D(0999879)^t where t is time in years. If tests on the fossilized skull reveal that 99.97% of the carbon-14 has decay
Explain how would you construct an MO diagram to illustrate the interaction of these three p orbitals? Explain what you might expect from the corresponding Lewis structure?
Explain how you could prove the test tubes which contain three different chemical. Three test tubes, labeled A, B, and C, contain substances with approximately the same melting points.
The carbon-14 decay rate of a sample acquired from a young tree is .260 disintegration per second per gram of sample and the other wood sample organized from an object.
Determine the exponential model for size of culture as the function of time t in hours and use model to forecast how many bacteria there will be after two days.
Determine the melting point of ice under a pressure of 50bar. Suppose that the liquid water is1.00 g cm-3 and the density of ice under these conditions is approximately 0.92 g cm-3.
Determine the wavelength of a photon which is created by an electron falling from the n=3 level to the n=1 level in an excited hydrogen atom.
Next week you took $17 per guest and averaged 230 guests per night. Determine linear demand equation showing number of guests q per night as function of cover charge p.
Explain how do you tell if the equilibrium concentration of H ions is small compared to the initial concentration of acid? Is there a certain number that is considered small?
Determine the frequency and the wavelength of the light emitted when an electron changes from n=4 to n=3 in the H atom. Explain in what region of the spectrum is this radiation found?
Discuss how much heat is released when the 15.0 L of CO at 85degrees Celsius and 112 kPa reacts with the 18.5 L of H2 at 75 degrees C and 744 torr?
Calculate the order in which the following compounds will elute from a chromatography column: acetophenone, 1,3-dichlorobenzene,4-aminobenzoic acid and benzoic acid.
Average weight of the sport utility vehicle (SUV) can be estimated by W=5t2-60t+4700. How long will it take the $1000 investment to be worth $1500 if it is compound monthly at the annual rate 6%.
At 27degrees Celsius the rate at which crickets chirp is 2.0x10^2 per min but only the 39 chirps per min at 5 degrees Celsius. Determine the activation energy for the chirping process.
The solution is filtered and a 25.00 mL sample needs 17.50 mL of 0.0150 M HCl to neutralize it. Determine the value for Ksp of Ca(OH)2 from this data.
If final exam score counts for two-thirds of grade and other test count for one-third, then what range of scores on final exam would give her the final average over 70? All tests have maximum of 100
Cesium metal is used extensively in the television cameras and in the photocells because it has very low ionization energy and is readily ionized by the light.
Determine the de Broglie wavelength of one of these alpha particles. Alpha particles emitted from the radioactive radium have energy of 4.8 MeV.