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:

#1.0xx10^-4#

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 #1#, so the decimal point should follow the #1#.

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

#0.00010xx10^0#
#00color(red)(.)0010xx10^-1#
#000color(red)(.)010xx10^-2#
#0000color(red)(.)10xx10^-3#
#00001color(red)(.)0xx10^-4#

You can write the final answer by ignoring the initial zeros
#1.0xx10^-4#