A 3.43-gram silicon dioxide sample reacted with 2.17 grams of solid carbon. The products of this reaction were silicon carbide and carbon monoxide gas. According to the law of conservation of mass, what is the combined mass of silicon carbide and carbon monoxide gas that should be formed? A. 5.60 grams B. 3.43 grams C. 2.17 grams D. 0.00 grams

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

What element breaks down into yttrium-90?

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.