Boyle's law and charles' law! PLEASE HELP

boyles law state that the volume of a fixed mass is directly proportional to the absolute temperature given that the pressure is constant Charles law state that the volume of a fixed mass is inversely proportional to the pressure given that the temperature is constant

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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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.