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Silicon has been doped with 5 x 10^22 m^-3 of boron atoms. Calculate the conductivity of silicon at (a) room temperature (32 C) (b) at (125 C)
when solid copper is added to nitric acid copperii nitrate nitrogen dioxide and water are produced. write the balanced
In the reaction between p-aminophenol and aetic anhydride to form acetaminophen, 0.450 mL of water was added. What was the purpose of the water
A lactic acid/lactate ion buffer solution contains 0.44M HC3H5O3 and 0.90 M C3H5O3^-, respectively. The K a value of lactic acid is 1.4times 10^-4. Calculate the pH of this buffer.
Starting from the left side of the periodic table, the melting and boiling points of the elements first increase, and then decrease
If you add 0.35 g NaF to 150 mL of a 0.30 M HF, what is the pH of the resulting solution?
Calculate the standard free-energy change for the following reaction at 25 °C 2Au+3Ni---->3Au+3Ni2+
When 123.8 g of ethylene (C2H4) burns in oxygen to give carbon dioxide and water, how many grams of CO2 are formed
The following questions pertain to the magnitude of the x-component of the speed(absolute value of the velocity) cx=|vx| of atoms in a gas, whose probability distriubution has the form P(cx)= ae^-bc2/x. Write down the integral you would need to eva..
a kno3 solution is made using 96.4g of kno3 and diluting to a total solution volume of 1.20l. what is the the molarity
at 700ordmc keq 0.0152 for the following reaction2so2g o2g 2so3gwhat is numerical value of the equilibrium constant
Cesium-137 has a half-life of 30 years. You begin with a 20.0 g sample of Cs-137. How many half-lives occur if you wait a total of 60 years?
What volume (in liters) is occupied by 0.01 moles of carbon monoxide
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