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2 years ago

15

Example: Douglas spectaculary sleek hovercraft glides down a track of 36m. It takes him 13 sec. to cross the finish line. What i

s his speed?

1 answer:

Whitepunk [10]2 years ago

3 0

Explanation:

Speed = Distance/Time

Distance = 36m

Time = 13s

speed = 36/13

= 2.769 m/s

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The balanced chemical equation between iron and oxygen to produce iron (III) oxide is,

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Calculating the limiting reactant: The reactant that produces the least amount of product will be the limiting reactant.

Mass of iron (III) oxide produced from Iron = $4.079 mol Fe * \frac{2 mol Fe_{2}O_{3}}{4 mol Fe} *\frac{159.69 g Fe_{2}O_{3}}{1 mol Fe_{2}O_{3}} = 325.7 g Fe_{2}O_{3}$

Mass of iron (III) oxide produced from oxygen= $4 mol O_{2}*\frac{2 molFe_{2}O_{3}}{3 mol O_{2}}*\frac{159.69 g Fe_{2}O_{3}}{1 mol Fe_{2}O_{3}} = 425.84 g Fe_{2}O_{3}$

Iron (Fe) produces the least amount of the product iron (III) oxide. So, Fe is the limiting reactant.

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