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lara31 [8.8K]
3 years ago
13

How many moles of Fe3O4 are required to supply enough iron to prepare 0.472mol Fe2O3 ?

Chemistry
1 answer:
kogti [31]3 years ago
5 0

The combustion reaction for Fe₃O₄ in an oxygen molecule O₂ yields Fe₂O₃.

The number of moles of Fe₃O₄ required to prepare 0.472 moles of Fe₂O₃ is:

0.315 moles

The reaction equation is:

\mathbf{4Fe_3O_4+O_2 \to 6Fe_2O_3}

From the above reaction;

4 moles of Fe₃O₄ react with oxygen to produce 6 moles Fe₂O₃.

i.e.

Fe₃O₄ : Fe₂O₃ = 4 : 6

Fe₃O₄ : Fe₂O₃ = 2 : 3

\mathbf{ = \dfrac{2}{3}\times 0.472}

= 0.315 moles

Therefore, we can conclude that 0.472 moles of Fe₂O₃ are prepared from  0.315 moles of  Fe₃O₄.

Learn more about chemical reactions here:

brainly.com/question/1689737?referrer=searchResults

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Neporo4naja [7]

Answer:

2666.7 hours

Explanation:

The key to solve this problem is that we are given the propane gas consumed in one hour by giving us the information of the volume consumed at 1 atm, 298 K (25 +273). Using the gas law we can calculate the rate of consumption  of propane per hour, and from here we can calculate its mass and converting it to gallons and finally diving the 400 gallos by this number.

PV = nRT ∴ n = PV/RT

n = 1 atm x 165 L/ (0.08206 Latm/kmol x 298 K ) = 6.75 mol propane

Mass propane :

6.75 mol x 44 g/mol = 296.88 g

convert this to Kg:

296.88 g/ 1000 g/Kg = 0.30 Kg

calculate the volume in liters this represents by dividing by the density:

0.30 Kg / 0.5077 Kg/L =  0.59 L

changing this to gallons

0.59 L x  1 gallon/3.785 L = 0.15 gallon

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400 gallon/ 0.15 gallon/hr = 2666.7 hr

6 0
3 years ago
What happens when light is not spread out
Maru [420]

Answer:

Spreading out a wave over a larger area just causes the wave strength to weaken, but does not cause gaps to form. Therefore, if you look at photons as waves, spatial gaps never form in light as it travels through free space, no matter how dim it gets.Spreading out a wave over a larger area just causes the wave strength to weaken, but does not cause gaps to form. Therefore, if you look at photons as waves, spatial gaps never form in light as it travels through free space, no matter how dim it gets

Explanation:

8 0
3 years ago
If 3.0 moles of x and 4.0 moles of y react according to the hypothetical reaction below, how many moles of the excess reactant w
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Answer is: <span>1.0 mol X left over. 
</span>Chemical reaction: X + 2Y → XY₂.
n(X) = 3,0 mol, excess reactant.
n(Y) = 4,0 mol, limiting reagent.
n - amount of substance.
from reaction: n(X) : n(Y) = 1 : 2.
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HELPP WITH CHEMISTRYYY PLEASE
nirvana33 [79]

Answer:

This is the electronic configuration of selenium atom.

Explanation:

Selenium is present in group 16.

It is the member of oxygen family.

Its atomic number is 34.

Electronic configuration:

Se₃₄ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁴

The noble gas notation is used for the shortest electronic configuration of other periodic table elements.

For example:

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Abbreviated electronic configuration:

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