Question

Need help with science

Answer 1

Cu(reactant) :- 1
S(reactant) :- 1
Fe(reactant) :- 1
O(reactant) :- 4

Answer 2

I got u man

Cu (reactant)= 1

S (reactant)= 1

Fe (product)= 1

O (product)= 4

Step-by-step explanation:

The answer is quite simple, look at each element and see if there is an attached number at the end. O4= 4 oxygen atoms O3= 3 oxygen atoms. You see the pattern?

Also if there is no such number attached to the element, assume there is one atom.