Answer :
Final answer:
The mass of the compound formed from 50 g of silicon and 50 g of oxygen, with a composition of 53.2% oxygen and 46.8% silicon, is 100 g, as it adheres to the law of conservation of mass and the predefined composition ratios.So the correct answer is B. 100 g.
Explanation:
The question asks to determine the mass of a compound formed from 50 g of silicon and 50 g of oxygen, given the compound has a constant composition of 53.2% oxygen and 46.8% silicon. To solve this, we first acknowledge the law of conservation of mass, which implies the mass of the reactants equals the mass of the products. In this scenario, the total initial mass of the reactants is 100 g (50 g of silicon + 50 g of oxygen).
Since the compound has a specific percentage composition by mass for each element, we can infer that any mass of this compound will maintain these proportions. Therefore, if we start with an excess of both elements, they will combine in the given proportion, and any excess will not be part of the compound. Because both elements will react according to their stoichiometric ratio derived from the compound's composition, we analyze each element's contribution based on the given percentages.
Given the limitations no reactants are limiting or in excess as the problem does not specify amounts reacting or left unreacted, and assuming complete reaction, the total mass of the compound will equal the combined mass of the reactants, which is 100 g. This assumption holds because the question implies that all the provided reactants will react according to the percentages specified. Thus, the mass of the compound formed from 50 g of each element is 100 g
