CH3(ch2)2C(ch3)3 IUPAC name please?

Explanation:

The name is of the compound is 3,3,4,4-tetramethylhexane.

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.