Question

the radius of a hydrogen atom is 0.0000000529177 of a millimeter. express this number as an approximation. (1 point) 0.00000006 0.0000005 0.0000000053 0.00000005

Explanation:

Step1: Identify significant - figures

We usually round to a reasonable number of significant - figures. Here, we can round 0.0000000529177.

Step2: Round the number

Looking at the first non - zero digit and the digit after it. The first non - zero digit is 5 and the next digit is 2. Since 2 < 5, we keep the 5 as it is and drop the remaining digits after the second significant figure. So 0.0000000529177 rounds to 0.000000053.

Answer:

0.000000053