what does gK stand for?

Question

for example, the specific heat capacity of freon-11 is 0.87 J/gK. if i am given a mass of 10.0 g to work with, do i have to convert it to gK? if so, how?

Answer 1

Specific heat capacity is the heat capacity divided by mass.
Heat capacity is expressed in J/K (Joule/Kelvin) so the specific heat capacity is expressed in J/(g*K)

Think of it as the amount of energy in Joule that 1 gram of the substance has to absorb in order to change its temperature 1 degree Kelvin.

So you don't convert mass into anything. Depending on your conditions you have to use a certain equation.

See http://en.wikipedia.org/wiki/Heat_capacity
for the proper definitions and formulas of heat capacity under different conditions and different expressions

Answer 2

yes.gK is gram Kelvin