What refinements had to be made in dalton's atomic theory to account for gay-lussac's results on the combining volumes of gases?

Dalton theory is based on atomic theory and now is known as formula weight whereas Gay-Lussac measured the volume of the gases.

Now, Dalton verified the law of multiple proportions theory but he was not able to state the change in volume from 4 to 2 in case of nitrogen and hydrogen (at constant temperature and pressure) whereas Gay-Lussac verified the results and prepared gases theory by combining volumes of gases.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

personal, she chose to do it.