Answer:
the quantity of carbon in 12 kg of gunpowder is 3 kg.
Explanation:
Nitrate: 60%
Sulphur: 15%
Carbon: 100% - (60% + 15%) = 25%
Now, to find the quantity of carbon in 12 kg of gunpowder:
Quantity of carbon X Percentage of carbon X The total quantity of gunpowder
Quantity of carbon = 0.25x12kg =
3 KG