Tritium is a radioactive form of hydrogen with a half-life of 12.3 years. How much of the 48.0 mg of tritium is still radioactive after 98.4 years?

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

Match the mixture with the substance// i really need on this guys (it’s a pic btw)