Question

How is scientific notation used in chemistry?

Answer 1

Is used to express numbers that are too big to write.

Explanation:

Scientific annotations is when you have such a bigger number that you cannot write it. Is like simplifying.
For example we have 0.00000345.
With scientific annotations is: 3. `3.45*10^-6`. This because you times the number by 10 six times, making sure a decimal number is over the point (.)

Hope this helps and good luck!!