Answer:
18
Argon is a chemical element with the symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas.
Explanation:
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Balanced chemical reaction: C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(g).
<span>There are same number
of atoms of on both side of balanced chemical reaction: ten oxygen atoms, three carbon atoms and eight hydrogen atoms.
</span>Carbon is oxidized and oxygen is reduced in this balanced chemical reaction of combustion of propane.
I think it's A. because the Earth won't always have the same tilt throughout it's whole life. The tilt of the axis will change, even if it's just ever so slightly. I hope this helps and i hope i'm right :)
Hi there!
The answer is no.
Although the real answer depends on what the pebble is composed of (since different materials produce different effects), most pebbles don't dissolve in water.
Hope this helps!
Answer:
the correct answer is an Orange baseball.