Hydrogen peroxide decomposes to form water and oxygen gas is this reaction endothermic or exothermic

What type of reaction is illustrated? 2c12o5 = 2cl2 + 502

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

What is an example of a physical property?