During a scientific study a hypotheses is generally modified or discarded
so for first blank the answer is hypotheses
Now in case of phlogiston theory it was assumed that when a substance catches fire it evolve certain substances known as phlogiston which was later on discarded as there is no such particle. Infact a substane undergoing oxidation may gain weight
Hence in second blank the answer is new evidence didn’t support it,
Answer:
Cu(OH)2 + 2HCl → CuCl2 + 2H2O
Flouroethanol and
sodium hydride is the product
Answer:
a
Explanation:
documentary is best researcher!.
Warm air rises, cool falls. (a)
