When a flask when full of air has a mass of 30.98 g. when the air is pumped out the flask has a mass of 30.72 g. find the mass of air in the flask before connecting to the vacuum pump

Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a.a piece of paper b.a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block

Argon, neon, and xenon are examples of

Write a polynomial function with the given zeros x= -1,0,2show your work