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The DSM-V does not define addiction as such, but has diagnostic criteria for 

The drugs with which people are most likely to develop psychological (behavioral) dependence are generally also found to have 

A mutation has occurred in a gene of a virus, which codes for a glycoprotein located on its surface.  This glycoprotein is required for the virus to attach to its host cells.  The mutation changes one codon from ACC to ACA.  Select all of the following that are true:

What is the mole fraction of ethanol in a solution made by dissolving 25.0 g of ethanol, C2H5OH, in 53.6 g of water?

What is the mol fraction of ethanol, C2H5OH, in a solution of 75.3g of ethanol and 525g of water?

A sealed container contains 0.352 L of water with an atmosphere of oxygen gas. What is the concentration of O2 in the water if the external pressure is 4.24 atm given that kH for O2 is 1.66 × 10-6 M/mm Hg at this temperature?

To make a 3.0 M solution, one could take 3.00 moles of solute and add

For a liquid solution made by dissolving a solid or a gas in a liquid, the

How many moles of KF are contained in 244 mL of 0.135 m KF solution? The density of the solution is 1.22 g/mL.

What volume of 3.00 M CH3OH solution is needed to provide 0.500 mol of CH3OH?