Because any element used in the cathode produced electrons, Thomson concluded that a.) atoms were indivisible.
b.) only metals contained electrons.
c.) atoms contain a nucleus.
d.) all atoms contained electrons.

i dont know the answe

answer carbon and three oxygen atoms;

hcl + naoh → h2o + nacl

explanation:

hcl + naoh → h2o + nacl   is the reaction that is correctly balanced.

however, pcl3 + h2 → ph3 +3hcl, 2ca+ 3cl2 → cacl3, and c5h12 + 5o2 → 5co2 + 6h2o are not correctly balanced.