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Elena L [17]
2 years ago
5

What is the easiest way to determine the reactivity of an element

Chemistry
1 answer:
makkiz [27]2 years ago
4 0

I know the answer to your question but if you want me to answer this question first, I need your help with my question "How do I solve number 12? Quick please I need help ASAP!!!"

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Reduction is the process by which eletrons are gained by an atom. 
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Help! The products of a chemical equation are CO2 and 2H20. Which set of atoms
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D. Ap3x just did it

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An iron(iii) sulfate hydrate is 18.4% water. What is the formula of the hydrate? What is the name of the hydrate?
aleksley [76]

Answer:- Formula of the hydrate is Fe_2(SO_4)_3.5H_2O and it's name is Iron(III)sulfate pentahydrate.

Solution:- As per the given information, there is 18.4% water in the hydrate. If we assume the mass of the hydrate as 100 grams then there would be 18.4 grams of water and 81.6 grams of Iron(III)sulfate present in the hydrate.

Molar mass for Iron(III)sulfate is 399.88 gram per mol and the molar mass for water is 18.02 gram per mol.

We will calculate the moles of Iron(III)sulfate and water present in the compound on dividing their grams by their molar masses as:

81.6gFe_2(SO_4)_3(\frac{1mol}{399.88g})

= 0.204molFe_2(SO_4)_3

18.4gH_2O(\frac{1mol}{18.02g})

= 1.02molH_2O

Now, the next step is to calculate the mol ratio and for this we divide the moles of each by the least one of them means whose moles are less. Here, the moles of Iron(III)sulfate are less than moles of water. So, we divide the moles of each by 0.204.

Fe_2(SO_4)_3=\frac{0.204}{0.204}  = 1

H_2O=\frac{1.02}{0.204} = 5

There is 1:5 mol ratio between Iron(III)sulfate and water. So, the formula of the hydrate is Fe_2(SO_4)_3.5H_2O and the name of the hydrate is Iron(III)sulfate pentahydrate.


3 0
2 years ago
Please help!
Arada [10]

Answer:

The answer is NO

Explanation:

In every compound, the sum of oxidation number between the elements is 0.

  • In NO, nitrogen acts with +2 and oxygen as usual acts with -2
  • In N₂O₃, nitrogen acts with +3 and oxygen, -2
  • In NO₂, nitrogen acts with +4, and oxygen -2
  • In N₂O, nitrogen acts with +1, and oxygen -2
8 0
3 years ago
To change a solid to a liquid, you need to increase / decrease the amount of heat energy
nataly862011 [7]
Increase because of the higher the temp
7 0
2 years ago
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