Developing the melting point of a compound
In developing the melting point of a compound, if the heating is carried out too fast, would the observed melting point be higher or lower and why?
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After the solid sank to the bottom of the graduated cylinder the volume in the graduated cylinder was read as 15.2 mL. What is the density of the solid?
The solubility of CO2 in water at 25°C and 1 atm is 0.034 mol/L. What is its solubility under atmospheric conditions? (The partial pressure of CO2 in air is 0.0003 atm.) Assume that CO2 obeys Henry's law.
What are the boiling point and freezing point of a 4.33 m solution of naphthalene in benzene? (The boiling point and freezing point of benzene are 80.1°C and 5.5°C, respectively.)
A flask holds 100ml. When empty, is mass is 125.54g. When filled with a solution of potassium bromide, the mass of the flask and solution is 425.54 g. What is the density of the solution?
The lowest energy photons visible to the human eye have energy 164 kJ/mol. What is the wavelength of such a photon, in nm?
A gas occupies 85ml at 0°C and 710 torr. What temperature would be required to increase the pressure to 760 torr with the volume remaining constant?
A current of 10.7 A is applied to 1.25 L of a solution of 0.554 M HBr converting some of the H+ to H2 (g), which bubbles out of solution. What is the pH of the solution after 68 minutes?
In a titration, 35.84 mL of 0.2419 M HCl solution is required to completely neutralize 18.62 mL of Fe(OH)3 solution. What is the molarity of the Fe(OH)3 solution?
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