Please help me with my 8th grade chemistry assignment
When sugar is added to water to make a sugar solution, a physical change occurs. According to the Law of Conservation of Mass, what prediction can be made about this physical change?
A. The sugar solution will have the same volume as the water in the beaker.
b. The sugar solution will have the same mass as the sugar and water.
c. The sugar solution will have less mass than the sugar and water.
d. The sugar solution will have more mass than the sugar and water.

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.