1. (4 pts.) In 2018 the Michigan Department of Environment, Great Lakes, and Energy tested the water in 30 homes in Benton Harbor, MI. Eight out of 30 of the homes tested
had Pb2+ concentrations higher than 15 ppb. Remember a ppb is one microgram per
liter (1 ug/L). Change 15 ppb of Pb2+ into g/L and moles/L. Show all your work below!

What is the mass of 8 moles of sodium atoms

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

15. what volume of cci, (d = 1.6 g/cc) contain6.02 x 1025 cci, molecules (ci = 35.5)(1) 10.5 l(2) 250 ml(3) 9.625 l(4) 1.712 lplz answer with step by step explanation