Answer:
H20
Explanation:
H20 (WATER) is a compound because its constituent atoms, oxygen and hydrogen are present in a definite ratio (1:2)
Can you get a closer picture, then I can help! It looks like it says something on rain, hail and something else. I cant see it though! :)
the molar mass of the element
2NaOH(aq) + H2SO4(l) → 2H2O(l) + Na2SO4(aq)