You need to determine the mass of an aqueous solution. You determine the mass of your 10.0 mL graduated cylinder to be 23.099 g. After adding a volume of 3.09 mL of solution to the cylinder, you reweigh it and determine the new mass to be 26.050g. What is the mass of the aqueous solution in grams?

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

i believe the answer is three water molecules

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.