Number of grams of nitrogen dioxide that are produced from 4 moles of nitric oxide

                     184 g of NO₂

Explanation:

                   The balance chemical equation for the synthesis of NO₂ from NO is as follow;

                                            2 NO + O₂  →  2 NO₂

Step 1: Calculate moles of NO₂ produced:

According to balance chemical equation,

                     2 mole of NO produced  =  2 moles of NO₂

So,

                   4 moles of NO will produce  =  X moles of NO₂

Solving for X,

                      X =  2 moles × 4 moles / 2 mole

                      X =  4 moles of NO₂

Step 2: Calculate Mass of NO₂ as:

                                 Moles  =  Mass / M.Mass

Solving for Mass,

                                 Mass  =  Moles × M.Mass

Putting values,

                                 Mass  =  4 moles × 46.0 g/mol

                                 Mass  =  184 g of NO₂

i belive it is water