Consider the following chemical reaction 2H 2 O(l) 2H 2 (g)+O 2 (g) What mass of H 2 O is required to form 12 L of O 2 at a temperature of 335 K and a pressure of 0.966 atm

Ifound this on google “laws of chemical combination. it states that matter can neither be created nor destroyed. it stated that a given compound always contains exactly the same proportion of elements by weight.” i hope this you for what your looking for.

While unproven, it uses facts to support part of a conclusion. it is still factual and has predictive power, however.