Answer:
c)
Explanation:
don't understand properly but it is c) cause they go through gens
700 mL ....................
It means it has a constant deceleration
D) Its position changes because the unbalanced forces move the object.
Answer:
See explanation
Explanation:
The law of conservation of mass states that mass can neither be created nor destroyed. This implies that in a chemical reaction, we can only have the same number of atoms of each element on both sides of the reaction equation.
If we write 4Fe2S3 it means that we have;
4 * 2 = 8 atoms of Fe
4 * 3 = 12 atoms of S
8 + 12 = 20 atoms in all
