74.02% is the percent by mass
A. Would be the correct answer :-)
1. CHEM CHANGE
2. PHYS CHANGE
3. CHEM CHANGE
4. CHEM CHANGE
5. PHYS CHANGE
There are 2 possible correct answers. Those answers are A and C because atoms "fuse together" by sharing electrons, and both compounds react to water, as they both dissolve in it. I would choose C as my answer, though.
D because animals changing colors is a mutation
