Students in Ms. Alvarez's eighth grade science class are investigating how temperature, in degrees Celsius (°C), affects the solubility of a compound in
100 milliliters (mL) of water. Ms. Alvarez provides the students with a graph that
shows the solubility of a certain compound, as shown below.
SOLUBILITY OF A COMPOUND
160
140
120
100
Compound Dissolved (g)
80
60
40
20
0
10
60
70
20 30 40 50
Temperature (°C)
She then tells the students that she will demonstrate how many grams (g) of the
compound will dissolve in 100 mL of water at 40°C. Based on the information in the
graph, which of the following is the best prediction of how many grams of the
compound will dissolve at 40°C?
40 g
65 g
0859
100 g