A nurse is preparing to administer 7.5 mL of ampicillin 250 mg oral suspension to a toddler who has otitis media. The nurse should recognize that 7.5 mL is equivalent to how many tsp? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

To convert milliliters (mL) to teaspoons (tsp), one can use the conversion factor that 1 teaspoon is approximately equal to 5 milliliters. Therefore, to find out how many teaspoons 7.5 mL is equivalent to, the calculation would be 7.5 mL divided by 5 mL/tsp. The result of this calculation is 1.5 tsp. When rounding to the nearest tenth, the answer remains 1.5 tsp.