Answer:
Cool air moves down while hot air rises
You could do a baking soda volcano or a diet pepsi and mento's volcano
Answer:
did you ever get the answer lol
Carbon is 12 grams per mole
The molecular weight of unknown gas : 23.46 g/mol
<h3>Further explanation</h3>
Given
A vessel contains 10% of oxygen and 90% of an unknown gas.
diffuses rate of mixed gas = 86 s
diffuses rate of O₂ = 75 s
Required
the molecular weight of unknown gas (M)
Solution
The molecular weight of mixed gas :(M O₂=32 g/mol)

Graham's Law :
