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olga2289 [7]
3 years ago
7

What is the difference between a primitive and body centered unit cell?

Chemistry
1 answer:
Butoxors [25]3 years ago
7 0

The key difference between unit cell and primitive cell is that the unit cell has parallelepiped geometry whereas 2D primitive cell has parallelogram geometry and 3D primitive cell has parallelepiped geometry.

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Which model of an atom was molded after the solar system.
Crank
The answer is the bohr model was molded after the solar system
8 0
4 years ago
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A closed system initially containing 1×10^-3 hydrogen 2×10^-3M iodine at 448 degree Celsius and is allowed to reach equilibrium.
GaryK [48]

Answer:

Kc = 50.5

Explanation:

We determine the reaction:

H₂  +  I₂   ⇄   2HI

Initially we have 0.001 molesof H₂

and 0.002 moles of I₂

If we have produced 0.00187 moles of HI in the equilibrium we have to know, how many moles of I₂ and H₂, have reacted.

           H₂     +      I₂      ⇄   2HI

In:     0.001       0.002           -

R:       x                 x                2x

Eq:  0.001-x    0.002-x      0.00187  

x = 0.00187/2 = 9.35×10⁻⁴ moles that have reacted

So in the equilibrium we have:

0.001 - 9.35×10⁻⁴ = 6.5×10⁻⁵  moles of H₂

0.002 - 9.35×10⁻⁴ = 1.065×10⁻³ moles of I₂

Expression for Kc is =  (HI)² / (H₂) . (I₂)

0.00187 ² /  6.5×10⁻⁵ . 1.065×10⁻³ = 50.5

5 0
3 years ago
`Let's just consider the concept of stoichiometry without any confusing chemicals. Here is a generic equation: 2A + 6B ? 3C. If
lesya [120]

Answer:

Option D. 5.5

Explanation:

The equation is this:

2A + 6B  ⇒  3C

With the amounts that we were given, let's determine which is the <em>limting reactant</em>

2 A reacts with 6 B

4 A will react with ( 4 .6)/2 = 12B

I have 11 B, so the limiting is B

6 B react with 2 A

11 B will react with (11 .2 )/6 =3.66 A

I have 4 A, so A is the excess.

6 B produce 3 C

11 B will produce ( 11 .3)/6 = 5.5C

7 0
3 years ago
Which element is non-metallic and a gas at room temperature?
ANEK [815]

Answer:

Notrogen(N)

Explanation:

Plz mark me as brilliant

7 0
2 years ago
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Hi pls answer this i don't get it ​
joja [24]
The answer is P
You can count how many electrons in the picture
Or you can search for the one who has 3 electrons in the outer shell
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