Answer: sorry i dont knowExplanation:
Answer:0.286M
Explanation:
10.7g / 149.89g/mol×0.25L
Between 23 and 87%
Sorry if I’m wrong
Explanation:
Reaction equation showing alpha decay in Uranium-238 is as follows.

It is known that an alpha particle is basically a helium nucleus and it contains 2 protons and 2 neutrons.
Symbol of an alpha particle is
.
As atomic mass or weight is the sum of total number of protons and neutrons present in an atom.
Hence, the atomic weight of the alpha particle is (2 + 2) = 4.