6which substances have atoms of the same element but different molecular structures?
(1) he(g) and ne(g) (3) k(s) and na(s)
(2) o2(g) and o3(g) (4) p4(s) and s8(s)

If 2 molecules of one reactant combine with 5 molecules of another to produce 3 molecules of a product then which of the following is the correct representation of the reaction? a. 2a + 3b = 5c b. a2 + b5 = c3 c. a2 + b3 = c5 d. 2a + 5b = 3c