You are asked to balance the chemical equation H2 + O2 ® H2O. How many of the following ways are correct ways to balance this equation?
I. 2H2 + O2 ® 2H2O
II. H2 + O2 ® H2O
III. 4H2 + 2O2 ® 4H2O
IV. H2 + O2 ® H2O2

the correct answer is a

3

explanation:

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".