If i have a 200 l container filled with nitrogen at a pressure of 1.0 atm, how many moles
of nitrogen are present at 25 degrees c?

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole

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

When water dissociates, each water molecule splits into a hydroxide ion and a) h 3 o + b) a hydrogen atom c) a hydrogen ion d) h 2 o e) oh —