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Physical Chemistry
suggest an explanation why making and using biodiesel has a smaller effect on the percentage of carbon dioxide in the atmosphere than using petroleum-based diesel.
Physical Chemistry
why bases have to be in excess when preparing salts?
Physical Chemistry
a) For each pound (454g) of ammonium nitrate that exploded (products being nitrogen gas, oxygen gas, and water vapor) how many kJ of thermal energy were released and how many L of gas (measured at 1atm and 25degreeC) were formed? We know deltaHf for ammonium nitrate is -87.37 kcal/mol
b) The density of ammonium nitrate is 1.725g/cm^3. How many litres did the volume of the system increase when the pound of ammonium nitrate exploded?
b) The density of ammonium nitrate is 1.725g/cm^3. How many litres did the volume of the system increase when the pound of ammonium nitrate exploded?
Physical Chemistry
what is unit cell structure of noble gases?
Physical Chemistry
ho photons are emitted when exposed to light?
Physical Chemistry
A 1.00kg block of copper at 20degreesC is dropped into a large vessel of liquid nitrogen a -196degressC. How many kilograms of nitrogen boil away by the time the coper reaches -196degressC? The specific heat capacity of coppe is 0.385kJ/gdegressC and the heat of vaporization of nitrogen is 5.57 kJ/mol.
Physical Chemistry
a. How many radial nodes are present in the radial eigenfunction associated with the 3p
atomic orbital for hydrogen-like systems? What about the corresponding spherical
harmonic?
b. For the hydrogen-like Platinum ion (Pt77+), at what values of r will the radial nodes
appear in the 3d orbital?
atomic orbital for hydrogen-like systems? What about the corresponding spherical
harmonic?
b. For the hydrogen-like Platinum ion (Pt77+), at what values of r will the radial nodes
appear in the 3d orbital?
Physical Chemistry
0.21 gram of metal react with 100ml of N/2 H2SO4 to completely dissolve in it remaining acid use to completely Neutralize 32.5ml castic soda.find out the equivalent weight of metal?
Physical Chemistry
A specified quantity of NH4Cl is react with 0.8N NaOH solution of 100ml till the completion of reaction . Excess of NaOH neatralize with 0.75N H2SO4 of 12.5ml solution then find out the quantity of NH4Cl
Physical Chemistry
Which of the following is an example of an exothermic reaction?
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#339914 on Dec 2023
#339914 on Dec 2023