Which of the following is a chemical property? a. ability to change color upon exposure to air b. ability to conduct electricity c. ability to conduct heat d. ability to become magnetic

m=9

step-by-step explanation:

7m+8=71 subtract   8 from 71 which is 63 than divide it by 7m   equal 9.

                             

Coal i believe hope this

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.