For fe, its atomic number is 26 and its mass number is 56. how many neutrons does it have?
a.26
b.30
c.56
d.82

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

Based on the equation and the information in the table, what is the enthalpy of the reaction?

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