What is the only non metal in group 14

Agas has a volume of 0.7 l at 300 mmhg. what would be the new volume at 900 mmhg

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 ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?