7) a piece of metal is placed in a clear solu...
7) a piece of metal is placed in a clear solution. bubbles form and the metal disappears. the mass of the final solution is less than the mass of the first solution and the metal. is this an exception to the law of conservation of mass? explain.
Answer
# Brief Explanations:
The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. In this case, bubbles forming indicate a gas is produced. The mass of the final solution being less than the initial solution + metal is because the gas (produced in the reaction) has mass and escapes into the atmosphere. If we account for the mass of the gas, the total mass (mass of solution + mass of gas) will equal the mass of the initial solution + mass of the metal.
# Answer:
No, this is not an exception to the law of conservation of mass. The gas produced in the reaction has mass and escapes, so when considering the mass of the gas, the total mass is conserved.