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ipn [44]
2 years ago
9

1. please answer i really need your help

Chemistry
2 answers:
myrzilka [38]2 years ago
7 0
1. solve the bracket (OH)3= 3 Oxygen, 3 Hydrogen

2. multiply 2Fe with (OH)3= 2*3= 6, 2*3=6

3. solve 2FE3= 2*3= 6FE

4. Add all= 6Fe+ 6oxygen+ 6H= Total atom 18
elixir [45]2 years ago
6 0

Answer:

hm

Explanation:

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What is the difference between a weak and strong base?
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3 years ago
The NaCl crystal structure consists of alternating Na⁺ and Cl⁻ ions lying next to each other in three dimensions. If the Na⁺ rad
Yuliya22 [10]

Answer : The radii of the two ions Cl⁻ ion and Na⁺ ion is, 181 and 102 pm respectively.

Explanation :

As we are given that the Na⁺ radius is 56.4% of the Cl⁻ radius.

Let us assume that the radius of Cl⁻ be, (x) pm

So, the radius of Na⁺ = x\times \frac{56.4}{100}=(0.564x)pm

In the crystal structure of NaCl, 2 Cl⁻ ions present at the corner and 1 Na⁺ ion present at the edge of lattice.

Thus, the edge length is equal to the sum of 2 radius of Cl⁻ ion and 2 radius of Na⁺ ion.

Given:

Distance between Na⁺ nuclei = 566 pm

Thus, the relation will be:

2\times \text{Radius of }Cl^-+2\times \text{Radius of }Na^+=\text{Distance between }Na^+\text{ nuclei}

2\times x+2\times 0.564x=566

2x+1.128x=566

3.128x=566

x=180.9\approx 181pm

The radius of Cl⁻ ion = (x) pm = 181 pm

The radius of Na⁺ ion = (0.564x) pm = (0.564 × 181) pm =102.084 pm ≈ 102 pm

Thus, the radii of the two ions Cl⁻ ion and Na⁺ ion is, 181 and 102 pm respectively.

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3 years ago
Study the picture below. <br><br><br><br><br><br>Done!! Thanks ​
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The rabbit and the girl are living things.

The shoe and the skirt are non-living things.

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Does my body get all its energy from the sun?
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3 years ago
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