Haw many ppm in 30 percent?

Answer 1

by "ppm" I assume you mean "parts per million". 30 percent means 30 per 100, and 1,000,000 (a million) divided by 100 is equal to 10,000. This is the ration between ppm and percent. 30x10,000 is equal to 300,000, so 30 percent is equal to 300,000 ppm

Answer 2

ppm is parts per million; percent is parts per hundred. Therefore, to convert percent to ppm you need to multiply by 10,000.