The new concentration would 0.05 M
Dilution factors are the number of times a solution is diluted such that the volume is multiplied each time.
Thus, multiplying the volume of a solution means that the concentration is divided each time.
For example, a solution that is diluted by a factor of two means that the volume is multiplied by two. When this happens, the concentration would be divided by two.
Thus, for a 0.1 M solution diluted by a factor of 2, the new concentration would be:
0.1/2 = 0.05 M
More on dilution can be found here: https://brainly.com/question/24881505