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The specific heat of an unknown metal is found to be 0.233 J/K g. The Law of Dulong and Petit predicts a molar heat capacity of 26 J/K mol. Use this law to estimate the molar mass of the metal.
Which of the following describes what happens to the solubility of a slightly soluble ionic compound when a common ion is added to the solution
A 0.150 M aqueous solution of the weak inorganic acid HA was prepared from the pure compound, and three 50.0 mL aliquots were transferred to 100.0 mL volumetric flasks.
Calculate the mass of water produced when 5.41 g of butane reacts with excess oxygen
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.73 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound? For bonus mark..
A 0.7445 g sample containing only CaCO3 and Mg(OH)2 is titrated using 0.3004 M HNO3. If it takes 31.75 mL of HNO3 to reach the end point of the titration
Acetone (CH3)2CO, has a larger dipole moment than water, but NaCl will not dissolve in it.
the rate at which a substance through a semipermeable membrance is determined by the diffusivity D(cm^2/s)of the gas . D varies the membrance temperature
How would the presence of a double or triple bond help to determine the geometric shape of a molecule?
Which of the 20 standard amino acids would be best to use to create a buffer at pH = 8.6 and why?
For a particular sample of copper, two peaks were obtained in the mass spectrum,showing an abundance of 69.10% at m/e 63 and 30.90% at m/e 65. Calculate the relative atomic mass of this sample of copper to three significant figures, using the data g..
Xenon gas is released during a certain chemical reaction and pushes back the atmosphere with a change in volume of the vessel (it has a movable piston) from 2 to 20 Liters. Calculate the work done by this release of gas.
The initial temperature of the HCl and Ba(OH)2 solutions is the same at 20.48°C. For the process H+(aq) + OH-(aq) H2O(l), the heat of neutralization is -56.2 kJ/mol. What is the final temperature of the mixed solution?
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