Answer:
0.65atm or 65.3kPa
Explanation:
Given parameters:
Initial volume of He = 500mL
Initial pressure = 98kPa, this gives 0.967atm
Final volume = 750mL
Unknown:
Final pressure = ?
Solution:
A good grasp of Boyle's law should suffice here. The law states that:
"the volume of a fixed mass of gas varies inversely as the pressure changes if the temperature is constant".
Mathematically;
P₁ V₁ = P₂ V₂
where P and V are pressure and volume
1 and 2 are the initial and final states;
Now, solve for the unknown P₂;
0.967 x 500 = P₂ x 750
P₂ = 0.65atm or 65.3kPa
