A sample of an ideal gas is in a sealed rectangular container that has sides of different sizes. Side A has an area of 80cm² and side B has an area of 100cm².

Give an expression that correctly compares the pressure P exerted on sides A and B of the container and explains the relationship in terms of net force and molecular collisions with the sides.

This shows that at a constant net force on the sealed container, the molecular collisions of the ideal gas on side A is greater than the molecular collisions of the ideal gas on side B by a factor of 1.25.

Explanation:

Area of side A = 80cm²

Area of side B = 100cm²

Pressure exerted by the ideal gas is given as force per unit area

Thus, the pressure exerted on side A is 1.25 times the pressure exerted on side B.

This shows that at a constant net force on the sealed container, the molecular collisions of the ideal gas on side A is greater than the molecular collisions of the ideal gas on side B by a factor of 1.25.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.