Answer:
accretion at convergent boundaries
Explanation:
Radioactivity comes from unstable atoms of certain elements. Radioactivity consists of alpha radiation (2 protons and 2 neutrons), beta radiation (1 electron), or gamma radiation (Electromagnetic photons).
The answer is 18.23432 grams.
Molar mass of KOH= 56.1056

= 18.234 grams
Its either C or D I’m stuck on this.