Answer:

Explanation:
Given
Initial Form: Onyx
Final Form: Rectangular Solid
Dimension of Solid = 5.10 cm by 5.10 cm by 2.50 mm
Required
Volume of the solid (in cm³)
The volume of a solid is calculated as thus;

Assume the following;

The first thing to do is to convert the assumed height from mm to cm
Given that;

This implies that

Hence, the dimension of the solid in cm is:

The Volume is then calculated as;


Hence, the volume of the rectangular solid is 
We will use Ideal gas equation.
PV=nRT
where
P= pressure(in atm)=5.82atm
V=Volume=?
n= moles of gases=0.682
R = gas constant= 0.0821L atm / mol K
T = temperature= 68.2 C= 68.2 + 273.15 = 341.35 K
V= nRT/ P= 0.682 X 0.0821 X 341.35/ 5.82
V= 3.284 L.
Explanation:
nuclear fusion yields more energy than nuclear fission and the products of the reaction are not radioactive