board question

[wise146]

A mouth rinse contains 0.05 percent F. Which of the following represents the concentration expressed as ppm F?

A 5
B 50
C 500
D 5000

-does anyone know how to convert from percent to ppm. Thanks in advance

---

Members don't see this ad.

 

[AbstractDentist]

1ppm=1mg/kg=0.0001%

 

[wise146]

thanks for your help