One of the reactions that occurs in a blast furnace, where iron ore is converted to cast iron, is fe2o3 1 3co ¡ 2fe 1 3co2 suppose that 1.64 3 103 kg of fe are obtained from a 2.62 3 103-kg sample of fe 2 o 3 . assuming that the reaction goes to completion, what is the percent purity of fe 2 o 3 in the original sample?

Answer : The percent purity of in the original sample is 89.6 %

Explanation :

The given balanced chemical reaction is:

First we have to calculate the mass of Fe.

Molar mass of Fe = 55.8 g/mole

Now we have to calculate the moles of

From the balanced chemical reaction we conclude that,

As, 2 moles of Fe produced from 1 mole of

So, of Fe produced from mole of

Now we have to calculate the mass of

Molar mass of = 159.69 g/mole

Now we have to calculate the percent purity of in the original sample.

Mass of original sample =

Therefore, the percent purity of in the original sample is 89.6 %

air quality

poor drinking water

and heavy polution

can lead to poor health

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.