What phase change is the following substance undergoing? First, the particles of this substance are closely packed and
are not easily compressed. After the change, the substance
can flow easily but cannot be easily compressed.
a freezing
b melting
Cevaporation
d deposition
e sublimation

b melting

Explanation:

The phase change the substance is undergoing is from solid to liquid and this is called melting.

The phase change from solid to liquid is facilitated by a melting process.

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.