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Y_Kistochka [10]
3 years ago
6

Can pure substances made from compounds be physically separated?

Chemistry
1 answer:
Arisa [49]3 years ago
4 0

Answer:

it cannot !!

Explanation:

a chemical reaction MUST occur to separate a compound! :)

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Mg​ +2​+ 2e- → Mg oxidation or reduction
ahrayia [7]

Answer:

Reduction

Explanation:

The charge on Mg goes from 2+ to 0 which means this is a reduction.

6 0
3 years ago
What is the chemical formula of the salt produced by the neutralization of potassium hydroxide with sulfuric acid?KSO3KSO4K(SO4)
kakasveta [241]

Answer: The salt produced will be K_{2}SO_{4}

Explanation:

During a neutralization reaction, an acid reacts with a base for producing the correspondent salt, and water.

The strong acids release all the protons avalaible when are dissolved, such as sulfuric acid. As you can see, sulfuric acid have 2 protons ready for being released (H_{2}SO_{4}); and those places have to be occcupied for other ions equivalents to the H+: K+ from KOH in this case.

Therefore the answer will be K_{2}SO_{4}.

6 0
3 years ago
Granite is a ________ that contains the mineral quartz. a. mineral c. rock b. glass d. mica
kow [346]
I think it would be C

7 0
3 years ago
Read 2 more answers
A group of students were asked to design a device that converts light energy into heat. They built a small solar oven using a ti
horrorfan [7]

Answer:

answer is b

Explanation:

I think it is b. I don't know what land lenses are but focusing light on the can would heat it up more.

3 0
2 years ago
What are the products of the following combustion reaction?<br><br> 2C2H2(g) + 5O2(g) →
kakasveta [241]
A combustion reaction of an  will generally produce CO2 and H20 -- carbon dioxide and water and/or an oxide

looking at the combustion material C2H2, you know that the end products will be CO2 and H20, so the question is how much of each will you get

well, look at the total amount of carbon atoms, 2 C2, which means a total of 4 carbon atoms in this reaction, since only CO2 has carbon atoms, that means there must be 4 CO2 as an end product and 4 CO2 will use up 4 of 5 O2 molecule leaving only 1 O2 molecule for the H2 reaction.

now O2 has a total of 2 oxygen molecules whereas H20 has only a single oxygen molecule, hence the end product must have 2 H20

check that the H atoms balance out on both sides
4 0
2 years ago
Read 2 more answers
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