Express `6.022 xx 10^23` in the form of a number which contains only three significant figures.

Answer

To express `6.022 x 10^23` in the form of a number that contains only three significant figures, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Original Number**:
The original number is `6.022 x 10^23`.

2. **Determine Significant Figures**:
We need to express this number using only three significant figures. The significant figures in `6.022` are `6`, `0`, and `2`. The digit `2` is the third significant figure.

3. **Round to Three Significant Figures**:
To round `6.022` to three significant figures, we look at the fourth digit (which is `2`). Since `2` is less than `5`, we do not round up the third digit. Thus, `6.022` rounded to three significant figures is `6.02`.

4. **Express in Scientific Notation**:
We need to keep the scientific notation intact. Therefore, we write the rounded number as `6.02 x 10^23`.

### Final Answer:
The number `6.022 x 10^23` expressed in the form of a number with three significant figures is `6.02 x 10^23`.

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