Answer:
hydrogen fuel cell cars are not competitive
Because the water seeped through the bag (? I don’t know the context correct me if I’m wrong)
It is most likely A since gas particles do not have a fixed volume.
Things such as gloves, a labcoat, and often goggles are an absolute necessary. In addition, if you get hurt you're supposed to put the other on yourself to neutralize it. Example, if acid gets on your skin, pour a base over that to neutralize the acid, and vice versa.
