Question

Given that specific heat capacity of seawater is 3000 joules (SI unit energy) does it take to raise temp. of the entire ocean by 2 C?

Answer 1

The unit of specific heat capacity isn't joules, it's actually joules *per kilogram-kelvin* (which is the same as per kilogram-degree Celsius).

Specific heat capacity is the amount of energy (in joules) it takes to raise the temperature of 1 kg of a substance by one Kelvin, or one degree Celsius. Is there any information indicating how many kg of salt water there are in the ocean?