Final answer:The number of drops added to the water to increase the volume from 1.2L to 1.202L is 40 drops. The percentage of the acid solution that is acid is approximately 0.166%, which is not listed in the provided answer options.Explanation:A scientist made an acid solution by adding acid to 1.2L of water, resulting in a final volume of 1.202L. To determine the number of drops added, we calculate the volume increase, which is 1.202L - 1.2L = 0.002L. Since 1 mL = 0.001L, the increased volume in milliliters is 0.002L * 1000 = 2 mL. Given that each drop is 0.05mL, the number of drops is 2 mL / 0.05 mL/drop = 40 drops.To find the percent composition by volume of the acid solution, we have the volume of acid (2 mL) over the total volume of the solution (1.202L), which is 2mL / 1202mL = 0.0016647. Converting this to a percentage, we multiply by 100, yielding approximately 0.166%. However, this option is not presented in the choices, suggesting there might be a typo in the question or answer choices....

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