# The hydrogen ion concentration of a vinegar solution is 0.00010 M. How is this concentration written in scientific notation?

##### 1 Answer

May 21, 2017

#### Answer:

#### Explanation:

In this problem, there are two significant figures. The final answer should also have two significant figures.

All scientific notation should have a non-zero number, followed by a decimal point to it's right, followed by remaining significant figures after that. The first non-zero number is

Moving the decimal to the *right* **decreases** the power of ten. The current number can be expressed as

You can write the final answer by ignoring the initial zeros