How many moles of KClO3 must completely react to produce 6 moles of O2

Which statement describes evidence of a chemical reaction? a) ice melting eliminate b) water boiling c) lighting a match d) grape juice freezing

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist