The heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.
<h3>What is heat?</h3>
Heat is the transportation of energy to or from a thermodynamic system.
By the formula of heat

Where n = moles
Delta Hrxn is molar heat
q = heat
Putting the values in the equation

Thus, the heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.
Learn more about heat
brainly.com/question/1429452
#SPJ1
It has a positive value.
We need the answers that you have to choose from.
Based on the information given the number of acres that was harvested is 553 acres.
Using this formula
Number of acres=Number of bushels of grain harvested/Bushels per acre
Where:
Number of bushels of grain harvested=94,010 bushels
Bushels per acre=170
Let plug in the formula
Number of acres=94,010/170
Number of acres=553 acres
Inconclusion the number of acres that was harvested is 553 acres.
Learn more about acres here:brainly.com/question/16650739