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1kg of wáter that is initially at 90 centigrados with a quality of 10 percent occupies a spring-loaded pyston -cylinder device,this device is now heated until the pressure rises to 800Kpa and the temperatura is 250 centigrados .Determine the total work produced during this process.
Joe makes up a aqueous solution of a copper salt from some ore samples he has found in Contact, NV. He places a rod of pure copper into the solution making a cathode and uses a graphite rod as an anode
What is the final pH of a solution that contains 0.1 M of H2N-CH2-CH2-NH3+ Cl- and 0.01 M of Cl- NH3+-CH2-CH2-NH3+. The pKa values of the compound are as follows; pKa1= 7.5 and pKa2= 9.5:
Describe the concept of chemical bonds and valence. Include in your discussion why firefighters should be concerned with CO. Your response must be at least 200 words in length.
Calculate the enthalpy change, , for the process in which 41.5 of water is converted from liquid at 2.1 to vapor at 25.0.
a test tube containing a mixture of kcl kclo3 and mno2 having a total weight of 23.584 g was heated to compose the
What is the pH of a solution formed by mixing 125.0 mL of a .0250 M HCL and 75.0 mL of a .0500 M NaOH
calculate the amount of heat in joules (q) required to affect this temperature change and the total change in internal energy, ?U. Note that some books use ?E as the symbol for internal energy instead of ?U.
Aceticle acid is a weak acid with pk=4,75.what is the pH of a solution prepared by adding 0,1 mol of acetic acid and 0,03 mol of NaOH to water at a final volume of 1liter. use henderson-hasselbach equation for calculations.
The specific heat of liquid bromine is 0.226 J/g-K. How much heat (J) is required to raise the temperature of 10.0 mL of bromine from 25.00 °C to 27.30 °C? The density of liquid bromine is 3.12 g/mL.
The two molecules have the same molecular geometry but different electron pair geometries. The two molecules have different electron pair geometries. The two molecules have the same electron pair geometry but different molecular geometries.
a sample containing 1.50 moles of neon gas has a volume of 8.00 liters. what is the new volume if 25.0g of neon is
K2SO4 is a strong electrolyte. Find out the concentration of each of the individual ions in a 0.550 M K2SO4 solution.
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