3. the density of mercury is 13.6 g/ml. find the
volume of 150 g

v=11.03cm

Explanation:

D=m/V

v=mass/density

150g/13.6g/ml

v=11.03cm³

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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bcde is the incorrect answer it is a