Iron turns to rust by the reaction 4Fe(s) + 3O2(g) ⟶
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2Fe2O3(s)

Calculate the mass in grams of iron needed to fully react with 9 moles of oxygen gas.
what’s the answer?

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".