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.
9. Based on the data in Table 1, if 4 g of powdered sucrose were mixed with 14 g of powdered sodium bromide at 25°C, the density of the resulting mixture would he closest to:
Your Answer is
Correct Answer is C
Explanation
Look at the last two rows of table 1, 4g powdered sucrose is between 3g and 6g, 14g sodium bromide is also between 12g and 15g, so the density of the final mixture should be between 2.31 and 2.62, Option C fits this range