Witch step in the scientific method involves making an inference
a. retest by other scientists
b. do background research
c. test with an experiment
d. draw a conclusion

List four observations that indicate that a chemical reaction may be taking place

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound