How many grams of Al2O3 can be formed when 3.33 moles of Al and 4.87 moles of O2 react according to the following balanced equation: 4 Al + 3 O2 --> 2 Al2O3 (Hint: find the limiter first!) Express the answer to 3 sig figs. Do NOT include units. Answer value

 170 grams of

Explanation:

The balanced chemical reaction is:

According to stoichiometry :

4 moles of require = 3 moles of

Thus 3.33 moles of will require=  of

Thus is the limiting reagent as it limits the formation of product and is the excess reagent.

As 4 moles of give = 2 moles of

Thus 3.33 moles of give =  of

Mass of

Thus 170 g of will be produced.

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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