What is the molar solubility of MgF2 in a solution containing 0.100 M NaF? (Ksp for MgF2 is 7.4 x 10^-11.)

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg

Water undergoes a large change in density at 0 ∘ c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 ∘ c given that