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Problem- The charge carrier density of GaAs at 26oC is 2.25x10^6 cm-3. What is the charge carrier density (in cm-3) at 176oC? The bandgap of GaAs is 1.42 eV.
I want you to elucidate the chemistry in this above problem.
A solution is made by mixing 6.90 L of 0.027 M SnCl4 and 2.91 L of 0.0043 M NaCl solution. What is the concentration of Cl- in the resulting solution
the standard enthalpy ofvaporization for c2br2f4 is 104.64 jg at its normal boiling pointof 47.26degc. calculate the
What is the concentration of hydroxide ions in pure water at 30 degrees, if Kw at this temperature is 1.47 x 10^-14
How many grams of ammonium sulfate are needed to make 0.3500 L solution at a concentration of 5.000M.
Two carbon atoms are present in the simplest member of which of the following types of hydrocarbon derivatives
Carboxylic acids have higher than expected boiling points due to dimeric associations involving hydrogen bonding. The structure of 3-methylbutyric acid is shown below. Draw a second molecule of 3-methylbutyric acid
empirical formula for 2.80 g nitrogen and 8.00 g oxygen. what is the molecular formula empirical formula of NH2Cl, molar mass = 51.5 g/mol
Write a reaction showing the reduction (hydrogenation) of 1-hexene to hexane. ( use structures for the compounds). Write a reaction showing the bromination (halogenation) of 1-pentene.
peroxyacetyl nitrate is an air pollutant produced in photochemical smog by the reaction of hydrocarbons oxides of
Find the ratio of the rms speed of He to that of Xe at 30 degrees Celsius. Find the average kinetic energy per mole of He and Xe at 30 degrees Celsius. enter your answers in scientific notation.
An unknown solution containing one of the salts ZnSO4, MgSO4 or SrCl2 gives a negative flame test but tarnishes a piece of magnesium inserted into the solution. Which salt was in the solution
We place 1.32 mol PCl5 in a 1.0L flask and allow it to reach equilibrium at a given temperature. What is the final concentration of Cl2 in the flask? PCl5 = PCl3 + Cl2 K= .47
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