In an experiment, 1.75 g sample of acetic acid, ch3cooh, was burned in oxygen in a calorimeter. the calorimeter contained 925g of water and had a heat capacity of 2.53 kj/°c. the temperature of the calorimeter and its contents increased from 22.2°c to 26.5°c. use these data to determine the molar heat of combustion of acetic acid? (specific heat capacity of water = 4.18 kj/kg·°c) show all work

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

the answer your looking for is c).