All atoms of an element have the same what

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

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

How do you convert 4 mmol of bromobenzene to ml?