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Gallium arsenide, GaAs, has gained widespread use in semiconductor devices that interconvert light and electrical signals in fiber-optic communication systems. Gallium consists of 60.% 69Ga and 40.% 71Ga. Arsenic has only one naturally occurring isotope, 75As. Gallium arsenide is a polymeric material, but its mass spectrum shows fragments with formulas GaAs and Ga2As2. What would the distribution of peaks look like for these two fragments?
An ideal gas is allowed to expand from 8.40L to 12.6L at constant temperature. By what factor does the volume increase. The pressure will increase by same factor
The solubility of the ionic compound M2X3, having a molar mass of 214 g/mol, is 3.18 10-7 g/L. Calculate the Ksp of the compound.
lead poisoning in children used to be treated with intravenous injections of EDTA. If the concentration fo EDTA in the blood of a patient is 2.55 x 10^-8 M and the formation constant for the complex, [Pb(EDTA)]2-, is 2.00 x 10^18
A blank titration of 10mL of similar solution containing no oxalic acid required 0.04mL to exhibit dectectable color. Find the concentration of oxalic acid in the unknown
Provide an example of the following mechanism by choosing an appropriate reactant and reagent then drawing curly arrows to show how the mechanism proceeds.
Litre of white gas, and density of the gas is 0.710 g/cm 3 . Calculate the mass of the fuel and express your answer in kgs?
Determine the partial pressure of each gas in a mixture of gases using Dalton's law of partial pressures
A 200. mL air sample collected at 35°C has a pressure of 550. torr. What pressure will the air exert if it is allowed to expand to 425 mL at 48°C?
Assume that fructose is a molecular solid and does not ionize when it dissolves in water.
How many grams of KCl would be required to react with 420 mL of 0.42 M AgNO3 solution?
they are stable molecules with normal bonds and are frequently isolated. d. all reactions involve reaction intermediates, but not all have activated complexes. e. they are intermediate structures which have characteristics of both reactants and pr..
Phosphorus-32 has a half-life of 14.0days . Starting with 6.00g of 32p , how many grams of phosphorous will remain after 42.0days.
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