For the reaction 4 Fe + 3 O2 → 2 Fe2O3, explain how you would calculate the moles of iron needed to make 10 moles of Fe2O3.

i can ! i just need to know what the paragraph is! : p

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

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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