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calculate the number of molecules present in each of the following samples:
sample of bezene c6h6 which contains a total of 5.65 mols of carbon.
If delta H for the reaction is -851.5 kJ/mol at 25'C, calculate the standard free energy change, delta G for the reaction at 25'C. Calculate the temperature at which the reaction changes from spontaneous to non-spontaneous.
Using as sample of gas of 12.0 moles are in a tank of 8.00 Litres at the temperature of 22.6 degree celsius. compute the difference in pressure between CH 4 and an ideal gas under these conditions
A solution contains 0.10 mol/L of a diprotic acid. The diprotic acid has the following pKa values: pK1 = 5.00 pK2 = 7.05 What is the isoioni point of this acid?
A ten L Dewar containing liquid nitrogen tips over in your car while you are transporting it. If it completely vaporizes what volume of Nitrogen gas will be produced at 1 atm and 20 degrees C
The enthalpy of formation of compound X is -612 kJ/mol, and the sole product of its combustion has a enthalpy of formation of -671 kJ/mol. What is the enthalpy of combustion of compound X?
Consider the gas phase reaction 2 HCL = H2 + Cl2 for which Kc = 16 at 523 Kelvin. If .030 moles of HCl is introduced into a 1 L vessel at 523 K
If you used the 9000 kilojoules you expend in energy in one day to heat 51000 {rm g} of water at 23^circ {rm C}, what would be the rise in temperature?
What is the molar mass of this substance, express your answer in g/mol and determine the moloar concentraitions Cr 2 O 7 ^2 and of K + ?
How many L of H2 gas (at STP) is produced from 470 mL of 0.36 M HCl and excess Zn? The reaction is: Zn + 2HCl = ZnCl2 + H2
Octane has a density of 0.692 g/mL at 20 degrees celsius How many grams of oxygen are required to burn 1.10 gal of octance.
if 2.3g of sodium reacted with 1.3g of water,what would be the total mass of sodium hydroxide and hydrogen produce?
Why is a mixture of alcohol and water used, rather than simply water itself, to saponify the fat or oil
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