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If you want to dope GaAs to make an n-type semiconductor with an element to replace Ga, which of the elements below would you pick?
AlSiInZnGe
Al and InZn and GeAl and ZnGe and Sionly Si
A gas expands against a constant external pressure of 2.1 bar until its volume has increased from 4.8 L to 7.9 L. During this process it absorbs 590.0 J of heat from the surroundings. Calculate the energy change of the gas.
Application of Boyle's Law - Determine the molecular formula of the compound
The coinage metals -- copper, silver, and gold -- crystallize in a cubic closest packed structure. Use the density of copper (8.95 g/cm3) and its molar mass (63.55 g/mol) to calculate an approximate atomic radius for copper.
Draw the following peptides, AND indicating the amide bonds that are formed through the side chains. What are the pKa values of the various groups on the peptide?
Given a concentration of 100 ppm in water, calculate the predicted equilibrium concentration concentration in air for methyl tertiary-butyl ether (MTBE)
How many grams of HCl are required to react with the 344 grams of FeCl2?
A gas-filled balloon having a volume of 2.50L and 1.2 atm and 25 Celsius is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23 Celsius and 3.00 x 10^-3 atm, respectively. Calcul..
Enzyme labeling can be used to map the structure of the active site of an enzyme using an affinity label, a molecule that is structurally similar to the substrate
What is the solubility of nitrogen in the divers blood at the bottom of the dive? b: If you assume the mass of the divers blood is 5.0 kg, how many moles of nitrogen comes out of the divers blood when he comes to the surface?
A volume of 60.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 24.7mL of 1.50 M H2SO4 was needed?
The ice was poured out into another container leaving a wet, empty beaker that weighed 46.146g. How much ice was poured into the other container?
Compute the a)molarity of the solution, b)molality of the solution, c) mole fraction of Ammonia.
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