40.0 is the answer, sorry, I had some lag, I would've answered it like 5 minutes ago
Hope I helped
The answer to your question is nitrogen dioxide
Answer:
a) 32.09 kPa
b) 32.09 kPa
Explanation:
Given data:
rate constant 
initial pressure is = 32.1 kPa
half life of A is calculated as



for calculating pressure we have follwing expression


a) 
b) 
A. 2
The dash represents two electrons