What is a "curie"?

standard charge of alpha particles
mass of one alpha particle
standard emission rate of alpha particles
a unit of gamma radiation

Amechanical wave that transports a lot of energy will have a

How many moles does 80.0 h2o respresent

Achemist reacted 57.50 grams of sodium metal with an excess amount of chlorine gas. the chemical reaction that occurred is shown. na + cl2 → nacl if the percentage yield of the reaction is 86%, what is the actual yield? show your work, including the use of stoichiometric calculations and conversion factors.