1.5*108 kilometers
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There are eight zeros in 150 million kilometers, as it is written as 150,000,000 kilometers. This is the same as 1.5 x 10^8 kilometers in scientific notation.
150,000,000 kilometers
150 in scientific notation is 1.5x102.
The scientific notation of 150 is: 1.5 × 102
150 million = 150,000,000