Two questions. 1. What makes a "fluorescent" highlighter marker so bright?

I just want to know the answer for the first one but i want to know who else knows this show.
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2. Who has seen/heard a show called.

Doctor Who? (Don't blame me for watching this show)

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work