Strontium-90 (Sr-90) has a half-life equal to 28.1 years. How much of a 100 gram sample of strontium-90 will remain after 56.2 years

Motivation cannot be developed with practice; a person either possesses it or they do not.

You are to give ampicillin with a recommended dose of 25mg/kg to a child with a mass of 29kg. if stock on hand is 250mg/capsule how many capsules should be given?

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)