Question

Describe what is meant by singnificant figures and order of magnitude.​

Answer 1

significant figures is a huge concept. so I think you should ask it to your teacher.

(2)--suppose you are given the avogadro

number ,then its order of magnitude will be =23..

formula :: if (a.bcd ×10^e )is a number where a,b,c..e are natural numbers then the order of magnitude of it will be =e where a is less than 10