During an upcoming experiment, the procedure requires that 2.25 gallons of distilled water are added to a beaker. You quickly notice that all of the graduated cylinders in the lab are measured in milliliters. How many milliliters of water would we need to measure for our experiment?

a c d and f

just finished the assignment

i just learnt this recently but i need to look through my notes again

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.