Express the following numbers in standard form.
`0.0000000000085`

Answer

To express the number `0.0000000000085` in standard form, we will follow these steps:

### Step 1: Identify the significant digits
The number `0.0000000000085` has significant digits `8.5`. We need to express this number in a way that the significant digits are in the format of a number between 1 and 10.

### Step 2: Move the decimal point
To convert `0.0000000000085` into standard form, we need to move the decimal point to the right until we have a number between 1 and 10.

In this case, we move the decimal point 12 places to the right:
- From `0.0000000000085` to `8.5`.

### Step 3: Determine the exponent
Since we moved the decimal point 12 places to the right, we will represent this movement with a negative exponent of 10. Therefore, we will write:
- \( 8.5 \times 10^{-12} \)

### Final Answer
Thus, the standard form of the number `0.0000000000085` is:
\[ 8.5 \times 10^{-12} \]

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