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Gnoma [55]
2 years ago
7

How many neutrons does the isotope lithium have A.) 3 B.) 5 C.) 8 D.) 4

Chemistry
2 answers:
Fantom [35]2 years ago
6 0
The answer is D they have 4 neutrons
Galina-37 [17]2 years ago
6 0
The answer is D) … they have 4
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What is the definition of electrical energy?
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2. A golden-colored cube is handed to you. The person wants you to buy it for
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2 years ago
A mixture of hydrogen and nitrogen gases is placed in a 1.0 L reaction vessel and the reaction is allowed to reach equilibrium a
e-lub [12.9K]

Answer:

a. 0.27 = Kc

b. 8.19×10⁻⁵ = Kp

Explanation:

The reaction is this: 3H₂(g) + N₂ (g)  ⇄ 2NH₃ (g)

As we have the moles of each in the equilibrium and the volume is 1L, we assume the concentrations as molarity.

1.6981 mol/L → H₂

0.5660 mol/L → N₂

0.8679 mol/L → NH₃

Let's make the expression for Kc

Kc = [NH₃]² / [N₂] . [H₂]³

Kc = 0.8679² / 0.5660 . 1.6981³

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Let's calculate Kp, derivated from Kc

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Δn it is always for gases

R is the Ideal gases constant

T is Absolute T°

Let's replace data → 0.27 . (0.082 . 700K)⁻² = Kp

8.19×10⁻⁵ = Kp

8 0
3 years ago
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