Answer: uranium
Explanation: It’s hard to find when mining and is required for nuclear fission
Are you sure you copied that down correctly? I know what NH3 is but HJ I am comming up blank on. The only thing HJ I know is hebdojoule which is unit system.
Are you doing chemical balancing?
Sulfur dioxide formula is : SO2
Hyrdrogen monobromide is : HBr
Hope this helped :)
