I think the correct answer from the choices listed above is option C. The mass of an ice cube is the total amount of water in the ice cube. Ice is the solid form of water. Hope this answers the question. Have a nice day. Feel free to ask more questions.
Answer: 
Explanation:

Multiply by t on both sides.


Now divide by I to isolate t.


Phosphorus + Sulfur ------> Phosphorus sulfide
2P + 3S ------> P2S3
Hope it helped!
based on the law of conservation of energy its it atoms hold by strong chemical bonds