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Physical Chemistry
I was curious what happens on a molecular level when you dunk an oreo in milk, and why exactly it affects an oreo when say, a toothpick isn't as affected.
Physical Chemistry
I badly need help in this can't even get past letter a:
Given the gas phase reaction: A + 2 B → R + S as first order with respect to each reactant and conducted in a constant volume batch reactor at 400K. The feed contains some inerts and initial total pressure is 4 atm. The rate of change of total pressure (P) with time in terms of P is given by:
dP/dt = 0.04[P-2.7][3-P] in atm per min
a) Determine the mole % composition of the feed.
b) What are the values and units of kA and kB in mol, Lit, min?
c) What is the half-life of A (min) and what is the total pressure at this time?
d) If the reaction is conducted at 400K and 4 atm constant pressure using the stoichiometric amounts of A and B in the feed and no inerts, what will be the new half-life of A, and what will be the % increase in total volume at this half-life?
Given the gas phase reaction: A + 2 B → R + S as first order with respect to each reactant and conducted in a constant volume batch reactor at 400K. The feed contains some inerts and initial total pressure is 4 atm. The rate of change of total pressure (P) with time in terms of P is given by:
dP/dt = 0.04[P-2.7][3-P] in atm per min
a) Determine the mole % composition of the feed.
b) What are the values and units of kA and kB in mol, Lit, min?
c) What is the half-life of A (min) and what is the total pressure at this time?
d) If the reaction is conducted at 400K and 4 atm constant pressure using the stoichiometric amounts of A and B in the feed and no inerts, what will be the new half-life of A, and what will be the % increase in total volume at this half-life?
Physical Chemistry
What is the pH of a buffer that consist of 0.20M NH3 and 0.10 M NH4Cl ? PKB of NH3= 4.75.
Physical Chemistry
DEAR SIR
ACCORDANCE OF ASTM D2598 FOR CALCULATION PHYSICAL PROPERTIES OF LPG.WHY FOR CALCULATION VAPOUR PRESSURE WE MUST MULTIPLY LIQUID VOLUME PERCENT*VAPOUR PESSURE FACTOR OF SPECIFIC COMPONENT?WHY CAN NOT WT% OR MOL% COMPONENT MULTIPLY VAPOUR PESSURE FACTOR OF SPECIFIC COMPONENT??
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TONE
ACCORDANCE OF ASTM D2598 FOR CALCULATION PHYSICAL PROPERTIES OF LPG.WHY FOR CALCULATION VAPOUR PRESSURE WE MUST MULTIPLY LIQUID VOLUME PERCENT*VAPOUR PESSURE FACTOR OF SPECIFIC COMPONENT?WHY CAN NOT WT% OR MOL% COMPONENT MULTIPLY VAPOUR PESSURE FACTOR OF SPECIFIC COMPONENT??
BEST REGARDS
TONE
Physical Chemistry
0.4grams of a compound on complete combustion gave 56ml of co2 at760mm and 0degree centigrade.the percentage of carbon in the compound is?
Physical Chemistry
According to the collision theory model,why does temperature affect the value of the rate constant.
Physical Chemistry
What factors determine weither a collisin between two molecules will lead to a chemical reaction?
Physical Chemistry
the decomposition reaction SO2Cl2 -SO2 + Cl2 is the first order reaction with rate constant (k)=2.2times ten exponent negative five at temperature of 320.What percent of SO2Cl2 is decomposed at temperature 320 after 90 minutes.
Physical Chemistry
Find the molarity and molality of a 15% solution of sulphuric acid whose density is 110g/cc and the molar mass of the sulphuric acid is 98g/mol
Physical Chemistry
Given the equation : COCl2--> CO + Cl2
a. A reaction mixture initally contains 1.6 M COCl2. Draw an "ICE" box that gives the concentrations of all reactants and products of equilbrium in terms of x.
b. Kc for the reaction at this temperature is 8.33 x 10^-4. Determine the equilbrium concentrations of all reactants and products using your equilbrum constant expression and ICE box results. You may make the assumption that the answer is negligible compared to 1.6
a. A reaction mixture initally contains 1.6 M COCl2. Draw an "ICE" box that gives the concentrations of all reactants and products of equilbrium in terms of x.
b. Kc for the reaction at this temperature is 8.33 x 10^-4. Determine the equilbrium concentrations of all reactants and products using your equilbrum constant expression and ICE box results. You may make the assumption that the answer is negligible compared to 1.6
