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The boiling point of a substance is defined as the temperature at which liquid and vapor coexist in equilibrium. Use the heat of vaporization (30.91kJ/mol) and the entropy of vaporization [93.2j/(Kxmol)] to caluculate the boiling point (degrees C) of liquid bromine.
Supppose that a 2 L solution is made from 178 mg of citric acid (C6H8O7). What is the molar mass of C6H8O7
Write a formula for the conjugate base formed when each of the following behaves as a bronzed acid.
Propose a structure for a molecule with a molecular formula C10H13NO and the following 1H NMR data. Briefly explain your answer.
If composite, define each simple sub-system and the internal restraint. If the vessel is shaken vigorously. Is the system then a simple or composite system?
The percentage of an additive of gasoline was measured six times with the following results: 0.13, 0.12, 0.16, 0.17, 0.20, 0.11%. Find the 90% confidence level interval
If the solution is 98.2 (wt/wt %) sulfuric acid and has a density of 1.83 g/mL, calculate the molarity of concentrated sulfuric acid. FW(H2SO4) = 98.086 Include unit symbol.
a 200-g sample of a metal absorbs 500 J, and its temperature rises by 30 degrees celsius. what is the specific heat of the metal?
What is the pH of a buffer prepared by adding 0.45 mol of the waek acid HA to 0.608 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66e-7
Determine the limiting reactant in HCl + NaOH = NaCl + H2O given 2 moles of HCl and 2.5 moles of NaOH
James needs a 0.600 M solution of KCL. He measures out 0.600 g of KCL and adds 1 L of water to the solid.
Calculate the radius of an iridium atom, given that Ir has an FCC crystal structure, a density of 22.4 g/cm3, and an atomic weight
A pound of coffee beans yields 54 cups of coffee (4 cups = 1qt ). How many milliliters of coffee can be obtained from 1g of coffee beans?
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