In a certain chemical reaction, Reactant 1 and Reactant 2 release thermal energy. Students collect data by measuring the temperature change produced by adding increasing amounts of Reactant 2 to 25 grams of Reactant 1. They graph the data.
Temperature Change Produced
with 25 grams of Reactant 1
20
15
10
Change in Temperature (°C)
nono
10
0
5 10 15 20 25 30 35 40
Amount of Reactant 2 (grams)
Students must design a device that uses 25 grams of Reactant 1 and produces the maximum amount of heat with the smallest amount of Reactant 2. How much of Reactant 2 should they
use to meet the criteria of the design challenge?