Iron combines with oxygen to form rust. given the chemical reaction, how many grams of rust would be produced if 3 grams of reactants were consumed? a) 0 grams b) 1 gram c) 3 grams d) 7 grams

Hello!

If 3 grams of reactants were consumed, then C) 3 grams of rust must be produced.

There are two possible chemical reactions between iron and oxygen to form rust:

These two chemical reactions obey the Law of Conservation of Matter, which states that matter is conserved in a chemical reaction.

So, if there are 3 grams of reactants initially, and they react completely, then 3 grams of rust (either Ferrous Oxide or Ferric Oxide) must be produced for the reaction to obey the Law of Conservation of Matter.

Have a nice day!

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.