How many moles of hydrogen are produced from the reaction of three moles of zinc with an access of hydrogen chloride?

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 the solubility of substance?

All of the following are part of the biosphere except