Odpowiedź :
a) [tex]m_{K2O}[/tex] = 2 * 39 u + 16 u = 78 u + 16 u = 94 u
b) siarczek żelaza (III) - [tex]Fe_{2}S_{3}[/tex]
[tex]m_{Fe2S3}[/tex] = 2 * 56 u + 3 * 32 u = 112 u + 96 u = 208 u
a) [tex]m_{K2O}[/tex] = 2 * 39 u + 16 u = 78 u + 16 u = 94 u
b) siarczek żelaza (III) - [tex]Fe_{2}S_{3}[/tex]
[tex]m_{Fe2S3}[/tex] = 2 * 56 u + 3 * 32 u = 112 u + 96 u = 208 u