Answer:
Hydrochloric acid is a strong acid with a distinct pungent smell and it is highly reactive while Sodium hydroxide is a strong base and it is fully Ionic
Answer: Yes, it does incriminate both Bill and Lucy. Both had DNA found at the scene which makes them both suspects until further investigations are conducted.
Explanation: The term "at face value" means without further investigation so it is just saying looking at what has been seen are Bill and Lucy suspects. This shows that they are because both have DNA found at the scene even though they may not have been the murderer they are being investigated.
I’m pretty sure it’s 150 joules