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Calculate the work w when 9 litre of an ideal gas at an initial pressure of 93 atm is expanded or compressed isothermally to a final volume of 93 litres reversibly. Give your answer in J.
A 20.0-mL sample of 0.25 M HNO3 is titrated with 0.15 M Na OH. What is the pH of the solution after 30.0 mL of NaOH have been added to the acid
How many milliliters of 1.00 M KOH should be added to 100 mL of solution containing 10.0 g of histidine hydrochloride (His HCl, FM 191.62) to get a pH of 9.30?
15.0 moles of gas are in a 8.00 litre tank at temperature of 24.6 degree celsius . calculate the pressurenbsp
A syringe containing 1.42 mL of oxygen gas is cooled from 99.7 C to 0.6 C. What is the final volume of oxygen gas
In order to maximize topographic contrast in SEM, would you use backscattered or secondary electron detector? Explain.
A helium nucleus has two protons and two neutrons. How many electrons would it take to equal the mass
Calculate the number of moles of B at each time in the table. 0 s mol 40 s mol 80 s mol 120 s mol 160 s mol (b) Calculate the average rate of disappearance of A for each 40 s interval, in units of mol/s. 0 - 40 s mol/s 40 - 80 s mol/s 80 - 120 s m..
what is the molarity of ions in a solution formed by dissolving 7.40 of the mixture in enough water to form 600.0 of
Ethanol normally boils at 78.4C. the boiling point elevation constant for ethanol is 1.22C/m. what is the boiling point of a 1.0 m solution
Which orbitals on the chlorine and iodine atoms overlap in the formation of the covalent bond in I-Cl
Calculate the wavelength in nanometers for the transition from energy level 5 to energy level 2 using the Rydberg equation.
gold forms a substitutional solid solution with silver. compute the number of gold atoms per cubic centimeter for a
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