Answer is: E- None of these.
NiCl₂ is nickel(II) chloride. Nickel chloride is salt.
KMnO₄ is p<span>otassium permanganate. P</span>otassium permanganate is salt.<span>
ZnSO</span>₃ is zinc(II) sulphite. Zinc sulphite is salt.<span>
SO</span>₂ is sulfur(IV) oxide. Sulpfur oxide is oxide. Oxidation number of sulfur is +4 and oxygen has oxidation number -2.
D milk turning sour
the other options are physical changes
The answer to the question above is 3
Answer:
a. endothermic
Explanation:
- Endothermic reaction: is a chemical reaction that absorbs heat or energy through the reaction.
- While, exothermic reaction: is a chemical reaction that releases energy through light or heat. It is the opposite of an endothermic reaction.
<em>So, Any reaction that absorbs 150 kcal of energy can be classified as </em><em>a. endothermic.</em>