How many molecules are in .5 moles of h2

I am not sure if .5 is 5 or 0.5 but, one mole has 6.023 * 10^23 molecules, so 0.5 moles has 3.01 * 10^23, and 5 moles has 30.12 * 10^23 molecules

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.

it's c (engineer's do their work with mechanical stuff not on any living being)