It looks like you may have intended to ask about a specific question or problem related to the properties of substances before and after the trials, but the question itself isn't entirely clear from the given text and tables.
Could you please specify what exactly you need to find out from these tables? Are you looking to compare the properties of the substances before and after the trials, or perhaps to calculate the mass of products formed in the reactions? Providing more details or context will help in giving a precise and detailed answer.