1) To write in Scientific Notation we must keep a rational number multiplied by 10 raised to an exponent. In this case, we have
641,693,000,000,000,000,000,000kg
[tex]\begin{gathered} 641,693,000,000,000,000,000,000 \\ 6.41693\cdot10^{23} \end{gathered}[/tex]So this number can be rewritten as 6.41693 x 10^23 kg
