The overall equation for the formation of hydrated copper(II) sulfate crystals from copper(II) oxide is

(i) In an experiment, a student completely reacts 9.54 g copper(II) oxide.

Show that the maximum possible mass of CuSO4.5H2O crystals that can be obtained is about 30

g.

[Mr

of CuO = 79.5 Mr

of CuSO4.5H2O = 249.5]

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.

diaria maybe go see a doctor about that