O nisi fa'atatauga #kemikolo:

O nisi fa'atatauga #kemikolo:

E fa'afefea ona sui le % ile ppm?

Tali: faatele i le 10000

Mo se fa'ata'ita'iga: 0.002% ×10000=20ppm

E fa'afefea ona sui le ZnO% i le Zn%?

Tali: ZnO% ×0.81=Zn%

Mo se fa'ata'ita'iga:ZnO 95% ×0.8025=Zn76.24%

E pei o le #ZnO molecular weight is 81, #Zn molecular weight is 65 , so 65/81=0.8025