Catalyst can speed up chemical reaction without being used up or involved in thr reaction..
Is an imbalance of electric charges within or on the surface of a material. The charge remains until it is able to move away by means of an electric current or electrical discharge. Static electricity is named in contrast with current electricity, which flows through wires or other conductors and transmits energy.[1]
B and D is out. It cant be A because heat of combustion is substance not compound. So the answer is D.
Answer: kg= 0.37
Explanation:
Use the molality formula.
M= m/kg
