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Problem- Suppose that the atomic mass unit (amu) had been defined as one-tenth of the average mass of an atom of sodium instead of one-twelfth of the mass of an atom of carbon-12.
What would the average atomic mass of magnesium be on this new scale?
What would the value of Avogadro's number be on this new scale?
Your answer must be supported by illustrations, Please answer with work shown to receive points
consider a region of the atmosphere of volume 25l which at 20c contains about 1.0 mol of molecules. take the average
How much heat is gained by copper when 51.8 g of copper is warmed from 15.5*C to 76.4*C? The specific heat of copper is 0.385 J/(g x *C)
A first order reaction has an activation energy of 59.2 kJ/mol and a frequency factor (Arrhenius constant) of 9.13 x 1013 sec -1. Calculate the rate constant at 26 oC.
Give n and p-type dopants for the following materials. Explicate your reasoning. Remember: Gases do not make good dopants. SiC
Using the Nersnst Eqaution [E=E^0 + (RT/nF)In(a1/a2) ] in terms of teh partial pressures of the components (specify assumptions). Also, calculate the Gibbs Free energy of the complete rxn.
Compute the molar solubility of Ag2C2O4 silver oxalate in water and b.) In 0.010 M AgNO3 ignoring the hydrolysis of oxalate ion in both.
1. compare and contrast the nitrogen requirements of microorganisms and higher forms of life describing how their
The enthalpy change when a strong acid is neutralized by strong base is -56.1 kJ/mol. If 12.0 mL of 6.00 M HBr at 21.30°C is mixed with 300. mL of 0.250 M NaOH
Formic acid, HFor, has a Ka value equal to about 1.8 X 10^-4. A student is asked to prepare a buffer having a pH of 3.40 from a 0.10 M HFor and a 0.10 M NaFor solution. How many milliliters of the NaFor solution should she add to 20 mL of the 0.10..
How many milliliters of boiling water are required to dissolve 25g of phthalic acid? If the solution were cooled to 14oC, how many grams of phthalic acid would you recrystallize out?
Which kind of properties are primarily affected by small amounts of impurities in semiconductor crystals
Devise a reaction to convert 2-butyne to 2-methoxy-2-butene either isomer or both? If so, explain what the reaction conditions are. If not, why not
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