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A reaction is second order in A with a rate constant of 0.039/ M s. The concentration of A was 0.30 M after 23 seconds. What was the initial concentration of A? Assume the stoichiometric coefficient for A is 1.
There are two ways of utilizing hydrogen as fuel in automobiles - as the replacement of gasoline in internal combustion engine or in a fuel cell. Can you explain why a fuel cell is more efficient using the Second Law of Thermodynamics
what is the structure of an ester of 2-methylpropionic acid that has the molecular formula: C8H13ClO2 and 5 signals in its 1H NMR spectrum?
At 1000 deg. K, a sample of pure NO2 gas decomposes. 2NO2(g)f/r2NO(g) + O2(g) The equilibrium constant Kp is 158. analysis shows that the partial pressure of O2 is 0.14 atm at equilibrium.
Calculate the number of moles of benzaldehyde and thiamine hydrochloride used in the Procedure. Explain why benzaldehyde is used for the theoretical yield calculation
Consider the heterogeneous equilibrium process shown below. C(s) + CO2(g) 2 CO(g) At 700.°C, the total pressure of the system is found to be 3.20 atm. If the equilibrium constant KP is 1.52,
determine if the brominated product (2,3-dibromo-3-phenylpropanoic acid) is contaminated with some unreacted starting material (during the bromination of trans-cinnamic acid)?
If 975g of copper is heated from 20 degrees C to 80 degrees C what amount of heat is absorbed?
What would the change in temperature be in each change if 1 mole of an ideal gas is subjected to numerous changes in state, C= 12.47 J/Kmol.?
A chemical reaction releases 58,500 J of heat into 150 g of water. Assuming no heat is lost to the surroundings
In the preparatoin of a new pain reliever calls for 1.8 moles of an organic compound with fomula Na2(CH2CO2H)2 NCH2CH2(CH2CO2)2. How many grams of this compound should be weighed out for the reaction
Consider equal volumes (say 1 rm L) of a substance in the solid, liquid, and gas phases. Arrange them in order of decreasing mass. If the mass difference between samples is relatively small, rank the items as equivalent.
A low melting metallic element has a vapor pressure of 28.2 torr at 458. oC. and a vapor pressure of 420. torr at 710. oC. What is the enthalpy of vaporization of this metal in kJ/mol?
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