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Problem- Explain why ice often forms on the valve of a tank of compressed gas (high pressure) when it is opened to the atmosphere and the gas escapes. Where does the H2O come from?
Illustrate structures to prove your interpretation.
Suppose you are trying to dope the semi-conductor Ge so that it will be an n-type semi-conductor. Which of the following elements would be a suitable dopant
Which of the subsequent isn't determined by the principal quantum number, n of the electron in a hydrogen atom. The energy of the electron
Problem- A certain volume of a 0.50M solution contains 4.6g of a salt. What mass of the salt is present in the same volume of a 2.2M solution?
How many valence electrons does one molecule of aspartame have? What are the bond angle measurements of aspartame?
curved arrows to symbolize the flow of electrons, white the stepwise mechanism for the acid-catalyzed esterification of p-aminobenzoic acid to ethyl p-aminobenzoate
The concentration of hydroxylamine in a solution is 0.025M. What is the concentration of hydroxide ion in the solution
Define dipole moment. Distinguish between polar and nonpolar bonds.Give an example of each
What is the function of the sodium thiosulfate in studying the kinetics of the hydrogen peroxide-iodide reaction?
How much heat is needed to melt 22.4g of ice at zero degrees celcius to form liquid water at zero degress celcius?
after you preform your experiment you determine that the kf value for naphthalene is 6.91 . you are using 10g of
Compute Kf for a solvent for which the molar mass is 145 g mole-1 as well as the enthalpy of fusion at the freezing point of 325 K is 17.9 kJ per mole.
Copper is elctroplated from CuSO4 solution. A constant current of 4.00 amp is applied by an external power supply. How long will it take to deposit 1.00x10^2 g of Cu? The atomic mass of copper is 63.546.
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