Whoever answers first will get brainliesthow much heat is absorbed by a 75g iron skillet when its temperature rises from 5oc to 21oc?

mass * temp change * specific heat

make sure the specific heat value is in Joules

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