3. Jax designs an experiment to determine how the amount of sodium chloride affects the boiling point of water. He adds 19,5 g, and 10 g of sodium chloride to three different beakers, each containing 100 mL of water. There is a fourth beaker that contains 100 ml water without any sodium chloride. He heats each of the samples on a Bunsen burner and measures the boiling point
with the same thermometer. Which of the following is the dependent/responsive variable in the experiment?
O The thermometer
O The amount of sodium chloride.
O The temperature at which the water boils.
O The amount of water,