Answer:
The red dot represents the melting point of the element, which as stated is approximately 19.9 degrees Celsius and how long it took for the heat to properly completely dissolve it.
The question kind of answers itself however, is there a way to re-word it or is there a different answer you're looking for?
Answer:
Cu+2AgNO3--->2Ag+Cu(NO3)2
Explanation:
Answer:
I think the answer is option B
