An isotope of cesium has 55 protons and 78 neutrons. what is the mass number of this isotope?

Which of these will change if the air in aclosed bottle is heated? abcdthe mass of the airthe composition of the airthe air pressure in the bottlethe number of air molecules in the bottle

When curium-242 is bombarded with an alpha particle, two products are formed, one of which is a nudge on. what is the other product

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town