A) Na2S
b) AlF3
c) O2
d) C6H12O6
I am pretty sure that the answer is B. extrusive rock. I hope that this helps you!! Good Luck!!
Answer:
a thermos bottle uses a vacuum to keep heat in the thermos.
Reactant are those that combine or reacts to give products !!
so in combustion of ethane ; ethane and o2 are reactants so ... your answer is B !!
