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when substitutionally incorporated into 1 kg of silicon will establish a charge carrier density of 3.091×1017 carriers/cm3 then Determine the amount (in grams) of boron ?
Compounds A and B have the formula C6H12. Both A and b combine with one molar equivalent of hydrogen in the presence of a palladium catalyst to form 2methylpentane. The heat of hydrogenation of A < The heat of hydrogenation of B.
A and B combines with HBr to form a mixture of the same bromoalkanes, and they both undergo hydroboration/oxidation to give a mixture of the same alcohols. Determine What is the structure of B?
the sun's diameter is 1.4E9m and its effective surface temperature is 5800K. Assume the sun is blackbody and estimate the rate of energy loss by radiation from the sun
a solution is prepared by mixing 50.0 ml of 0.24 m pbno32 with 50.0 ml of 1.6 m kcl. calculate the concentrations of
for each of the following changes at equilibrium, indicate whether the equilibrium shifts toward products or reactants or does not shift: a)increasing the temperature. b)adding C(s). c)removing CO(g) as it forms. d)adding H2O(g). decreasing the vo..
A disinfectant states that it will kill 99.9% of bacteria if left on for 45 minutes. What percentage of bacteria are killed if the disinfectant is left on only for 5 minutes
An adult female who weighs 164 pounds consumes on average 2470 Cal/day. If she wanted to lose 5.00 pounds in 293 days, what should her daily caloric intake
The experimental rate law for the decomposition of nitrous oxide (N2O) to N2 and O2 is rate = k[N2O]^2. Two mechanisms are proposed: I. N2O
Show that the energy transferred as heat when the pressure on an incompressible liquid or solid is increased by delta P is equal to -alphaTVdP. Evaluate q when the pressure acting on 100cm cubic of mercury at ) degre celcius is increased by 1.0kba..
an ideal gas is permitted to expand isothermally from two liters at 5.00 atm in two steps1 against a constant external
Does the effective buffer range of a buffer solution depend on the concentrations of the conjugate acid and base pairs in the buffer solution
What will be the equilibrium concentration of HI and Cl2 in the container? The answer is: [HI] = 1.47x10^-12 M [Cl2] = 7.37x10^-13 M
solutions of HCl and NaOH and must determine their concentrations. You use 33.6 mL of NaOH to titrate 100. mL of HCl and 24.0 mL of NaOH to titrate 50.0 mL of 0.0838 M H2SO4. Find the unknown concentrations.
Is there an easy way to get a quick and dirty comparative coefficient of friction for water vs a solution of sodium bicarbonate and water? I only have the most basic of chemistry skills. Is there a chart you could point me to?
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