Principal characteristics of alkanes

Physical Properties of Alkanes: Alkanes are colourless. Alkanes are less dense than water (alkanes float on top of water). Alkanes are non-polar molecules so they are more soluble in non-polar solvents than they are in polar solvents.

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.