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Vaselesa [24]
3 years ago
8

Can someone please help me with A. Really need it

Chemistry
1 answer:
IgorC [24]3 years ago
4 0
The three type of bridges are beam, arch, and suspension i believe.
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Iron is obtained by reaction of hematite (Fe2O3) with carbon monoxide. From the balanced reaction below, how many grams of iron
laila [671]

Answer: 2755.2 g of Fe will be produced from 24.6 mol of haematite.

Explanation:

The balanced chemical equation is:

Fe_2O_3+3CO\rightarrow 2Fe+3CO_2  

According to stoichiometry :

1 mole of Fe_2O_3 produce = 2 moles of Fe

Thus 24.6 moles of Fe_2O_3 will produce=\frac{2}{1}\times 24.6=49.2moles  of Fe  

Mass of Fe=moles\times {\text {Molar mass}}=49.2moles\times 56g/mol=2755.2g

Thus 2755.2 g of Fe will be produced from 24.6 mol of haematite.

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3 years ago
Which metal is used to make gasmasks ​
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Explanation:

Gas mask filters include activated carbon,

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when heating copper in the final step, the bright copper color changes to a dull brown. will the percent recovery be too high or
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<span>When heating copper in the final step, the bright copper color changes to a dull brown. I think this process will make the percent recovery low because a change in color can mean some reacted. Hope this answers the question. Have a nice day.</span>
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