Aluminum metal is burned in oxygen gas.
1) write the balanced equation for this reaction.
2) if 5.433 grams of aluminum is burned with 8.834 grams of oxygen gas, what is the limiting reactant?
3) what mass of product can be made? (what is the theoretical yield? )
4) what mass excess will remain?
5) what is the percent yield if 10.0 grams of aluminum oxide is produced?

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".

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qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.