A company desires to produce nickel by refining nickel oxide and sulfide ores. The first step of the process will produce a nickel carbonyl gas, Ni(CO4), by heating the ore. The second step is as follows:

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.

it would only be the stuff in module eight so you need to study all the lessons in that you also could check the flvs

hope this : )