What does the article suggest about the use of prescription drugs like Ritalin by people without ADHD?

Calculate the molarity of a solution of magnesium chloride with a concentration of 26.8 mg/mL.

A solid crystal of NaCl is

Free Response #2   Version B   Please circle 2B on the sheet and show your work for for full credit.   150. g of ice at 0°C is added to 325.0 g of water at 70°C. Assuming no transfer of heat to the surroundings, what is the temperature of the liquid water after all the ice has melted and equilibrium is reached?     specific heat (ice) = 2.10 J/g°C     specific heat (water) = 4.18 J/g°C     heat of fusion = 333 J/g     heat of vaporization = 2258 J/g

Given below are the temperatures at which two different liquid compounds with the same empirical formula have a vapor pressure of 400 torr.   CompoundT (°C)   dimethyl ether, CH3–O–CH3–37.8   ethanol, CH3CH2OH63.5  Which of the following statements (a–d) is false?

Which of the following statements about liquids is true?

Which of the following substances should be the most soluble in ethanol (CH3CH2OH)?

Determine the mass of a nonvolatile, nonionizing compound that must be added to 3.83 kg of water to lower the freezing point to 98.70°C. The molar mass of the compound is 50.0 g/mol and the Kf for water is 1.86°C kg/mol.

Liquid A and liquid B form a solution that behaves ideally according to Raoult’s law. The vapor pressures of the pure substances A and B are 233 torr and 135 torr, respectively. Determine the vapor pressure over the solution if 1.21 moles of liquid A is added to 5.30 moles of liquid B.

Which statement regarding water is true?