Atomic mass=no of neutron+no of electron
Atomic mass=25+30
Atomic mass=55
The correct answer is Gamma decay. It happens after beta and alpha decay
because what's left after those two can enter a new process of gamma
decay. This releases gamma rays which is a more complex term for the
photons that you mentioned before. These rays can be dangerous for
humans so care not to get caught in them.
It should remain constant because of the law of conservation of mass and because the flask is sealed no mass will escape
Answer:
An amide may be produced by reacting an acid chloride with ammonia.