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Calculate the pH of a 0.130 M solution of aniline C6H5NH2. The Kb of aniline is 4.30 x 10-10.
You place ethanol of 100 grams and water of 100 grams in a refrigerator. both are at room temperature Initially,. Determine which of the two liquid samples will cool faster and also explain why this happens.
The average radius of a molecule of lysozyme, an enzyme in tears is 1430pm,what is the radius in nanometers.
The oxide of 'N' element contains 33.33% of the element .The same element forms a chloride whose Vapour density is 59.25.
The amount of energy needed to heat 2.00 g of carbon from 50.0 C to 80.0 C is 42.6 J. what is the specific heat capacity of this sample of carbon.
A mechanic in an automotive repair shop is exposed to the following carbon monoxide levels over an 8 hour shift.
A refrigeration tank holding 5.00 L of Freon gas (C2Cl2F4) at 25°C and 3.00 atm pressure developed a leak. When the leak was discovered and repaired, the tank had lost 76.0 g of the gas.
Compute the cell potential(E) after the reaction has operated long enough for the [Al3+] to have changed by .60 mol/L. suppose T=25 C
A 100g sample of water at 27oC is poured into a 76.2g sample of water at 89oC. What will be the final temperature.
compute the enthalpy change, (Delta H), for this reaction per mole of A. suppose that the specific heat =[4.18J/(g*Degrees C) and density=1.00(g/mL)?
What will be the resultant pressure when the stopcock is opened?
a gas sample occupies 4.20 l under a pressure of 800 torr at 350K.At what temperature will it occupy 3.60 L at the same pressure?
15.0 moles of gas are in a 5.00L tank at 22.2°C. compute the difference in pressure between CH4 and an ideal gas under these circumstances. The van der Waals constants for CH4 are a=2.300L2⋅atm/mol2 and b=0.0430 L/mol.
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