Passage II
When 2 substances are combined to form a mixture, various properties emerge that are different from those of the original components. Table 1 lists the mass, volume, and density ( mass divided by volume) of mixtures of powdered sucrose and powdered sodium bromide at 25°C, and the masses of the substances that were combined to form the mixtures. Figure 1 shows how mass changes with volume for powdered sucrose and powdered sodium bromide at 25°C. Figure 2 compares the final volume of various ethanol-water mixtures to the initial volumes of the 2 pure liquids that were combined to form the mixture at a specific temperature.
Table and figures adapted from the Chemical Bond Approach Project, Chemical systems. ©1964 by Earlham College Press. Inc.
11. Based on the data in Figure 1, 25 g of powdered sucrose would most likely have a volume closest to:
Your Answer is
Correct Answer is D
Explanation
Put value questions. Look at figure 1, pay attention to the trend of the dotted line of sucrose, when the ordinate mass is 25g, the abscissa corresponding to sucrose is about 15 mL