Calcuate the mass of CO2 prodcued from the reaction of 1000. g Fe2O3 according to the following rxn. Fe2O3(s) + 3CO(g) →2Fe(s) + 3CO2(g)

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123