Answer:
893 moles
Explanation:
An ideal gas at STP occupies 22.4 liters. Calculating Oxygen as if it were an ideal gas there are . 893 moles of Oxygen in 20.0 liters.
Well definitely a scientist
Answer:
Is this from edge?
if so which lesson is it from and is this an assignment or a quiz?
I think the answer is C (Much of the evidence for evolution comes from fossils.)
The energy required is Ionization energy
