Surface qrea of the pacific ocean =
1.6176*108km2Â Â
                                     Â
Km         =
1000m
                                      Â
= 1.6176*108 *(1000m)2
                                       Â
= 1.6176*1014 m2
            Â
depth               Â
= 4080 m
volume                          Â
= area * depth
                                         Â
= 1.6176*1014 * 4080
                                           Â
= 6.599*1017 m3
                                           Â
= 6.61017 LÂ Â Â Â =
6.6*1020 ml
mass of
water                    Â
= volume * density of
water            Â
[density of water = 1g/ml]
                                         Â
= 6.6*1020 *1
                                          Â
= 6.6*1020
no of moles of
H2OÂ Â Â Â Â Â Â Â Â Â Â Â Â
= W/G.M.Wt
                                            Â
= 6.6*1020/18
                                             Â
= 3.6*1019 moles