What is the specific heat of the solid phase? if you could just explain to me how i get it, it'd be great

Specific heat is the amount of energy required to raise a certain amount (by mass or moles) by a certain temperature (usually 1 degree Kelvin). The overall units of specific heat are usually Joules/(kg*K), which uses kilograms and temperature Kelvin. The full equation is:  
energy = (mass)x(temperature)x(specific heat) 
 You need to know three of the variables above to solve the equation.

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.