<u>Radiometric</u> dating uses a radioactive substance to determine the <u>absolute </u>age of something.
It contain oxygen atom calculated below
<span>6.35gC x 2.00gO/1.50gC
= 8.47g O
</span><span> The law is that a sample of a pure substance is the same as any other sample of the pure substance no matter what the source is
</span>hope it helps
A warm air does always rise and cold air falls
