Final answer:
Without specific data, it's not possible to conclude if the amount of product formed is proportional to the amount of Epsom salt used. One must consider the Product Method to determine the limiting reactant and validate the law of conservation of mass.
Step-by-step explanation:
To compare bottles 2 and 3 in a chemistry experiment, one must understand the concepts of reactants and products. When assessing the relationship between the amount of Epsom salt used and the amount of product formed, it is essential to note the observations made during the experiment. If the mass of the products formed is directly proportional to the mass of Epsom salt used, this suggests a stoichiometric relationship where reactants convert to products in a fixed ratio. However, without specific data from the experiment being referenced, it is not possible to determine if the amount of product is proportional to the amount of Epsom salt.
One standard approach is the 'Product Method,' which involves finding the limiting reactant by calculating and comparing the amount of product each reactant can produce, after balancing the chemical equation and converting the given information into moles. Observing the mass before and after the reaction while maintaining the total mass constant can validate the law of conservation of mass, which states that mass is neither created nor destroyed in a chemical reaction.