There is no chemical change
Caffeine has the following percent composition: carbon 49.48%, hydrogen 5.19%, oxygen 16.48% and nitrogen 28.85%. Its molecular weight is 194.19 g/mol.
Answer:
B:Metamorphic
Explanation:
Rocks formed under high heat and pressure is essentially the definition of metamorphic rock :)
I don’t know about 1 But number 2 is AB + xH2O = AB.xH2O
