Someone crash my zoom class pleaseee

ID:95834426130

pass code: 210817

Pls will give brainliest and all p.s u can zoom in if u cant see plss

What is the base of 1/9 to the power of 2

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.