Odpowiedź:
m Na₂S = 2 * 23u + 32u = 46u + 32u = 78u
m CaCO₃ = 40u + 12u + 3 * 16u = 40u + 12u + 48u = 100u
m Ca = 40u = 24% tej mieszaniny
100% - 178u
x - 78u
178x = 7800 /:178
x = 43,8%
Liczę na naj :)
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Odpowiedź:
m Na₂S = 2 * 23u + 32u = 46u + 32u = 78u
m CaCO₃ = 40u + 12u + 3 * 16u = 40u + 12u + 48u = 100u
m Ca = 40u = 24% tej mieszaniny
100% - 178u
x - 78u
178x = 7800 /:178
x = 43,8%
Liczę na naj :)