Introduction to Orders of Magnitude in Chemistry

The video tutorial explains the concept of orders of magnitude, which is a method of comparing numbers using powers of 10. It covers decimal prefixes for both small and large numbers, providing examples of conversions such as nanometers to meters and megajoules to joules. The tutorial includes two examples: calculating the number of helium atoms in 5 kilograms and determining the mass of sodium chloride needed to create a solution. The video emphasizes the importance of understanding decimal prefixes and their multipliers for chemistry exams.

Describe the process of converting 1.8 megajoules into joules.

How do you calculate the number of helium atoms in 5 kilograms of helium using the given information?

What is the significance of significant figures in calculations involving orders of magnitude?