Determine the original mass of a sample of po-218, if 0.50 milligrams of the sample remains unchanged after 12.16 minutes

What is the [oh-] in a solution with a poh of 3.90

4. absorption has the highest risk of overdose due to increased potency. a. rectal b. oral c. transdermal d. intranasal

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al oxidizing agent = reducing agent =