QUESTION 1 (POLL) Straighten your arm away from you, and then bend it back
towards you. What is happening with your arm muscles? Check
all that apply.

They contract and relax.

They move my bones.

They get shorter and longer with each
movement.

They stay the same.

They stay the same

Explanation:

i'm pretty sure its b i might be wrong though!

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.