First of all, we need tô calculate moles of KCl
next, mass=mol×molar mass
Answer:
254.23 g/mol
Explanation:
Atomic mass for Osmium tetroxide would be 254.23 g/ml
Answer:
Option D.
Explanation:
When an element undergoes an alpha decay, the resulting daughter nuclei will have a decrease of 4 in the mass number and a decrease of 2 in the atomic number.
Considering the options given, only option D conform to the above illustration.
Therefore, option D represents alpha decay.
