The refers to the region below the mixed layer where salinity changes as you move deeper underwater.

The halocline refers to the region below the mixed layer where the salinity changes as you move deeper underwater.

Explanation:

The ocean has three primary layers. The top layer is the mixed layer which is the warmest due to the exposure to the sun.  The thermocline is the next layer and this layer is in between warm and cool ocean water. This layer is characterized by the rapid change of temperature with depth.

The halocline layer coincides with the thermocline layer and it is the region where salinity rapidly changes with depth.The third and final layer is the deep ocean characterized by higher density and lower temperature compared with the other layers.

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂

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