One of the most likely products for the reaction would be 
<h3>Chemical reactions</h3>
The reaction between 
and 
yields 3 products which are (a precipitate), 
, and 
as shown by the equation below:
One of the products precipitates out of the solution to give the reaction a precipitation reaction look.
More on precipitation reaction can be found here: brainly.com/question/24158764
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If the value of H is positive, it means you have to add that much heat to complete the reaction. If H is negative, it means that much heat is released during the chemical process. Because it is -73 kJ, 73 kJ of heat are released in the reaction.
Answer:
If anything but H2O were found, it would be evidence of a chemical change. Therefore, 4 is the only viable evidence that it was a physical change of H2O liquid to H2O gas.
The balanced equation is attached in the image below. The coefficients are 2, 2, blank.
