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Annette [7]
10 months ago
13

What type of chemical reaction is the reaction below?Fe2O3 + 3 Mg --> 2 Fe + 3 MgO

Chemistry
1 answer:
gogolik [260]10 months ago
5 0

Answer:

Replacement reaction or Single displacement reaction

Explanation:

Here, we want to know the kind of chemical reaction shown

As we can see here, the magnesium atom displaced the iron atom from its oxide

This is due to the fact that magnesium has a higher position in the elctrochemical series

This kind of reaction is called a replacement reaction or a single displacement reaction

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Isopropyl alcohol is mixed with water to produce a 35.0 % (v/v) alcohol solution. How many milliliters of each component are pre
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229.25 mL of isopropyl alcohol

425.75 mL of water

Explanation:

Knowing that the solution have a 35.0 % (v/v) isopropyl alcohol in water, we can calculate the volume of each component as following.

volume of  isopropyl alcohol = (35/100) × solution volume

volume of  isopropyl alcohol = 0.35 × 655 mL = 229.25 mL

Now, knowing the volume of isopropyl alcohol we can determine the volume of water.

volume of the solution = volume of isopropyl alcohol + volume of water

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What causes the difference in bond angles in carbon dioxide and water?
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Answer is: C) the fact that the number of lone pairs of electrons on the central atom is greater in the case of water.

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Water is polar because of the bent shape of the molecule.

Oxygen atom in water molecule has sp3 hybridization. The bond angle between the two hydrogen atoms is approximately 104.45°.

Oxygen atom has atomic number 8, it means it has eight protons and eight electrons, so atom has neutral charge. Oxygen is a nonmetal.

Electron configuration of oxygen atom: ₈O 1s² 2s² 2p⁴.

Oxygen atom has six valence electrons , two lone pairs and two electrons that form two sigma bonds with hydrogen atoms.

Carbon is a chemical element with symbol C and atomic number 6, which means it has 6 protons and six electrons. Four valence electrons are in 2s and 2p orbitals.  

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Answer: C) a redox reaction that produces an electric current

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Chemical cell is a device which is used for the conversion of the chemical energy produced in a redox reaction into the electrical energy. The cell consists of the negative terminal called as anode where oxidation takes place and a positive terminal called as cathode where reduction takes place.

Electrolytic cell is a device which is used to carry out chemical reactions by the use of electrical energy. The cell consists of the negative terminal called as cathode where reduction takes place and a positive terminal called as anode where oxidation takes place.

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