1. Solubility
2. Heat 100g of water to 35 degrees C. Add 37 grams of mystery salt.
3. If all the salt dissolves, it's KCl. If not, it's KNO3.
Answer:
I am almost positive that it is D. I might be incorrect do i appoligise if i am.
Explanation:
Incomplete combustion (where an element or compound reacts with oxygen to produce carbon monoxide and water) as a result of too little oxygen being available such that complete combustion(in which the first product is carbon dioxide instead) is not possible.