I need help on these Questions.

Given that the molar mass of nano3  is 85.00  g/mol, what mass of nano3  is needed to make 4.50  l of a 1.50  m nano3solution? use  .6.75 g18.9 g255 g574 g

Strong conductivity of plasma allows it to act and react as and

Joan writes four numbers on the board in standard form, and then she writes their scientific notation