I thought the answer is d
Answer:
A) 100 mL
Explanation:
At constant temperature and number of moles, Using Boyle's law
Given ,
V₁ = 200 mL
V₂ = ?
P₁ = 60 kPa
P₂ = 120 kPa
Using above equation as:

Answer: 4
Explanation:
4 is the only one that has to products as well as having the plus at the bottom
I think the answer is a, volume, but I still might be wrong.