By using information about the temperature and salinity of ocean water, oceanographers can determine the

By using information about the temperature and salinity of ocean water, oceanographers can determine the: Density

By using salinity, the oceanographer could determine to pick up the ocean water (let say for about 1 litre) and let it evaporate from the temperature.  This will leave them with the amount of salt per liter and its salt ratio could be used to determine the density for the ocean.

The sample with the lowest specific heat capacity will have the greatest temperature increase. in this case, it would be platinum.

I'm not sure what your asking buddy.. but i know that you can weld two peices of steel by pure force and pressure.