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4 years ago

In the balanced reaction below, what is the mole ratio comparing iron (Fe) and oxygen gas (O2)?

Chemistry

2 answers:

Leokris [45]4 years ago

8 0

The balanced chemical equation representing the reaction of iron and oxygen is,

$4 Fe (s)+ 3O_{2}(g) --> 2 Fe_{2}O_{3} (s)$

The coefficients of each reactant and product represents the number of moles of each reactant or product that is required for the complete reaction to take place.

The mole ratio of iron and iron (III) oxide: $\frac{4 mol Fe}{2 mol Fe_{2}O_{3}}$ or $\frac{2 mol Fe_{2}O_{3}}{4 mol Fe}$

Mole ratio of oxygen to iron (III) oxide: $\frac{3 mol O_{2}}{2 mol Fe_{2}O_{3}}$ or $\frac{2 mol Fe_{2}O_{3}}{3 mol O_{2}}$

So, the mole ratio of iron (Fe) to oxygen gas is: 4 : 3

Therefore, the correct answer is d) 4:3

Georgia [21]4 years ago

5 0

Mole ratio is the coefficients 4:3
4Fe + 3O2

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Chemical reaction is given as :

$2H_{2}O\rightarrow 2H_{2}+O_{2}$

Here, 2 moles of water gives 2 moles of hydrogen and one mole of oxygen.

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Now, to find the amount of water:

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4 years ago

. A protein has molecular mass of 400 kDa when measured by size exclusion chromatography. When subjected to gel electrophoresis

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Answer:

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From the data, with SDS we observe 3 bands ⇒ 180 kDa + 160 kDa + 60 kDa

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Answer:

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