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Veseljchak [2.6K]
3 years ago
5

1. Which of the following is an example of a hypothesis?

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

Answer:the correct answer is c

Explanation:

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NEED ASAP WILL GIVE BRAINLIST
inysia [295]

Answer:

It have 31 electrons

It have 31 electrons

4 0
2 years ago
A thermite reaction realeses large amounts of heat and light resulting in the melting of the iron metal
lara [203]

Answer:

1. Fe₂O₃ : Al = 1 : 2

2. Fe₂O₃ : Al₂O₃ = 1 : 1

3. Fe₂O₃ : Fe = 1 : 2

Note: The question is incomplete. The complete question is given below :

A thermite reaction releases large amounts of heat and light, resulting in the melting of the iron metal that forms during the reaction. The balanced chemical equation is given below: Fe₂O₃(s) + 2Al(s) ---> Al₂O₃(s) + 2Fe(l) Determine the correct mole ratios for the following substances, based on this chemical equation.

Explanation:

A thermite reaction is a highly exothermic reaction that occurs between a mixture of powdered aluminium and iron (iii) oxide.

The reaction is a redox reaction which produces aluminium oxide and metallic iron.

The heat given out in the reaction melts the iron formed. It is used to join railway tracks or cracked machine parts. The molten iron runs down between the tracks and welds them together.

The balanced equation of the reaction is given below :

Fe₂O₃(s) + 2Al(s) ---> Al₂O₃(s) + 2Fe(l) + Heat

The mole ratio of the reactant and products are as follows:

1. 1 mole of Iron (iii) oxide and 2 moles of aluminium are combined

Fe₂O₃ : Al = 1 : 2

2. 1 mole of aluminium oxide is produced from 1 mole of iron (iii) oxide

Fe₂O₃ : Al₂O₃ = 1 : 1

3. 2 moles of of iron are produced from 1 mole of iron (iii) oxide

Fe₂O₃ : Fe = 1 : 2

4 0
3 years ago
Benefits of characteris<br>ing chemicals​
yulyashka [42]

Answer:

There are many benefits to using chemical characterization, from reducing the testing burden, saving time and money for the manufacturer, and reducing the amount of animal testing required. From an ethical standpoint, the latter benefit can be especially attractive.

Explanation:

please mark my answer in brainlist

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3 years ago
A molecule of glucose is comprised of 6 atoms of carbon, 12 atoms of hydrogen, and 6 atoms of oxygen.
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Answer:

C6H12O6 the third choice

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**<br> 2. Where are each of the three particles located within the atom?
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protons and neutrons located within the nucleus, with electrons in orbitals surrounding the nucleus.

5 0
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