(2)? Chemistry? 55? (3)? Bachelor of science
The chemical equation of (1) reaction is 4H 2 O+3Fe 4H 2 +3Fe 3 O 4. (2) The explosion involves the combustion of hydrogen and belongs to chemical change. The number of nuclear charges is the number of protons. The charge number of the nucleus is 55, and the proton number is 55. (3) Fossil energy is a non-renewable resource and should be used reasonably, so C is incorrect.