Answer:
i need a picture or more info to understand
Answer:
while cooking or washing something lol
Answer:
C. 21%oxygen
Explanation:
Dry air contains 78.09% nitrogen, 20.95%oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases.
I suggest watching Martin Shkerli YouTube channel. He has a ton of videos on chemistry and is very helpful.
Answer:
As balloons rise, air pressure around them diminishes. When the ballon is made of elastic material, it expands because of the excess pressure inside. Its volume increases and its internal pressure decreases
Explanation:
