To express the density of oxygen, which is 0.001429 grams per cubic centimeter, in scientific notation, we need to write it in the form \( a \times 10^n \), where \( 1 \leq a < 10 \) and \( n \) is an integer.
First, we can rewrite 0.001429 as follows:
\[ 0.001429 = 1.429 \times 10^{-3} \]
This is because we move the decimal point 3 places to the right to convert it to a number between 1 and 10, which corresponds to the exponent \(-3\).
Therefore, the correct scientific notation for the density of oxygen is:
1.429 * 10 ^ -3
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