What are the boiling and melting points of steel?

One of the reactions in a blast furnace used to reduce iron is shown above. how many grams of fe2o3 are required to produce 15.5 g of fe if the reaction occurs in the presence of excess co? a.11.1 g b.22.1 g c.30.0 g d.44.2 g

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .