Alcuni suggerimenti per il calcolo #chimico:

Alcuni suggerimenti per il calcolo #chimico:

How to change the % to ppm ?

Answer : multiply by 10000

For example : 0.002% ×10000=20ppm

How to change the ZnO% to Zn%?

Answer: ZnO% ×0.81=Zn%

For example :ZnO 95% ×0.8025=Zn76.24%

As #ZnO molecular weight is 81, #Zn molecular weight is 65 , so 65/81=0.8025