Which causes the medium to vibrate in a direction parallel to

ransverse, longitudinal, & surface waves. Which wave causes the medium to vibrate only in a direction parallel to the wave's motion? A disturbance sends ripples across water in a tub, these ripples are examples of a: ... In an earthquake, a P wave is a longitudinal wave.

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.