The second one
only bases turn litmus paper blue
Answer:
protons but different number of neutrons.
Explanation:
10 atoms. If there are 10 in the reactants you need the same number in the products
The percent composition of what? It should ask to find the percent composition of one of the parts like copper, sulfer, or water.
Hydrogen, Nitrogen, Flourine, Oxygen, Iodine, Chlorine, Iodine, and Bromine.