Question

641,693,000,000,000,000,000,000 kg in scientific notation (round to 2 digits after the decimal)

Answer 1

Scientific notation​ is a system of numbering where we classify numbers that are either too large or too little. The number is written in two parts, a standard form as shown below:

`a\cdot10^y^{}`

As such, 641,693,000,000,000,000,000,000 kg in scientific notation​ becomes:

`\begin{gathered} 641,693,000,000,000,000,000,000\Rightarrow641.693\cdot10^(21)\Rightarrow6.41693\cdot10^(23) \\ 6.41693\cdot10^(23)\approx6.42\cdot10^(23)(2DecimalPlaces) \\ \Rightarrow6.42\cdot10^(23)kg \end{gathered}`