If 16.0 g of methane is allowed to react with 32.0 g of oxygen, what is the limiting reactant? Explain.
CH4(g) + 202 (g)
CO2 (g) + 2H2O(g)

The answer is b because c don't explain why the moths are on them and it isn't a because as we know only one species of moth does this

Answer : option a) 84explanation :

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.

Ansaquatic plants;  

Ihonestly was looking for an answer not trying to give one