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CHEMISTRY ASSIGNMENT
1. Write any two characteristics of Chemisorption.
2. Why does physisorption decrease with the increase of temperature?
3. Why are powdered substances more effective adsorbents than their crystalline forms?
4. Why is it necessary to remove CO when ammonia is obtained by Haber's process?
5. Why is the ester hydrolysis slow in the beginning and becomes faster after sometime?
if the experimenter uses a thermometer that reads 1.4C too high how will this affect the calculated molar mass.
Eight electrons can freely move in a box whose dimensions are 4m x 1m x 1m. sketch the occupied energy states and write the equation of the degenerated energies, including the quantum numbers, from the occupied states.
The quantity of an antimony in a sample can be determined by and oxidation reduction titration with an oxidizing agent. A 6.35 g sample of stibnite, an ore of antimony, is dissolved in hot
Choose four salts from the list below as well as indicate whether an aqueous solution of the salt would be expected to be acidic or basic. State an equation for each salt showing how you reached your conclusion.
How many grams of sucrose must be added to 320g of water to lower the vapor pressure by 1.5mm Hg at 25 degrees Celcius? The vaporpressure of water at 25 degrees Celcius is 23.8mmHg
Which of the following enzymes catalyzes a group transfer reaction? A. hexokinase B. aconitase C. phosphoglycerate mutase D. malate dehydrogenase E. triose phosphate isomerase
What mass of salicylic acid is needed to produce one extra strenght tablet of aspirin if the reaction has 60% yield. Please show work and correct sig figs.
Polonium metal crystallizes in a lattice which contains only one Po atom per cubic unit cell. The radius of polonium atom is 1.67 A. Calculate the density of the polonium metal
Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed.
1.60 m solution78.0 ml is diluted to a volume of 278 ml and a 139-ml portion of that solution is diluted using 175 ml
how much isopropanol and how much water will you use to make 20 ml of a 40 isopropanol water solution? how much
Calculate the equilibrium constant for the reaction - flask at a certain temperature according to the reaction
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