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Sketch a heating curve for a substance X whose melting point is 40 degrees Celcius and whose boiling point is 65 degrees Celcius.
a. Describe what you will observe as a 60.0 g sample of X is warmed from 0oC to 100oC.
b. If the heat of fusion os X is 80.0 J/g, the heat of vaporization is 190.J/g, and if 3.5 J are required to warm 1 g of X each degree, how much energy will be needed to accomplish the change in a?
Caproic acid C5H11COOH is found in small amounts in coconut and palm oils and is used in making artificial flavors. A saturated solution of the acid contains 11 g/L and has a pH of 2.94. Calculate Ka for the acid.
Draw the structure of the aromatic organic product formed from the reaction of the following compound with
if a 1.22 g piece of gold is hammered into a sheet whose area is 32.4 ft2 what is the average thickness of the sheet?
When performing your experiment, you add your first drop of oleic acid/benzene solution, and a lens forms immediately. What is wrong with your setup
Assuming 100% yield, calculate the final concentrations of reactants and products. Calculate the pH of the final solution
A volume of 20.22 mL of NaOH solution which is (0.046464) was needed to titrate 10.06mL of acetic acid to the phenolphthalein end point.
Which of the following is most likely produced by the reaction of a STRONG acid with a STRONG base
A sample of hydrogen is collected in a eudiometer at a temp of 23C. If the atm is 735 torr, what is the pressure of the carbon dioxide
what concentration of oxygen would be needed to maintain equilibrium in a system where NO and NO2 are known to be at equal concentrations
Observe the following reactants and predict which of the following may form the potential products given the values for the energy of activation, , and enthalpy of the reaction, , in combination with the molecular orientation.
a student was asked to identify an unknown hydrate by following the procedure described in this module. after heating
Draw the molecule by placing atoms on the grid and connecting them with bonds. Show the formal charges of all atoms in the correct structure. Include all lone pairs of electrons.
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