A buffer is able to resist pH change because the two components (conjugate acid and conjugate base) are both present in appreciable amounts at equilibrium and are able to neutralize small amounts of other acids and bases (in the form of H3O+ and OH-) when the are added to the solution.
Answer:
copy and paste
Explanation:
highlight, right click, then go to where you want it, then right click again, and paste. and done
Answer: All of the answers are correct EXCEPT "An instance of a class cannot be changed after it is created.
Explanation: I've done the problem. Also, if you have an instance of a class, you can no longer change it. It is frozen in time as that one instance. If had a class defining pets and you made an instance dogA where the pet was a brown medium sized dog, dogA would always be a brown medium sized dog. I think, at least.
Your correct answer is A. Always drive at the posted speed limit.
While B. and C. are logically also correct, I wouldn't call them the "golden" rules. Following A. can help you avoid B. to make matters better, hehe.
