Answer:
I would say to keep the oxygen we breathe in or to filter out the bed uv rays from the sun like radiation.
Explanation:
im guessing
Answer:
the three products of destructive distillation of coal are:-
1. coal gas
2. coke
3. ammonia liquor
I’m so sorry explain it more
Answer
thus, 4 moles of oxygen gas (O2) would have a mass of 128 g.
Tearing paper, Physical Change