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Slav-nsk [51]
3 years ago
14

Each element has a unique number of ___

Chemistry
2 answers:
faltersainse [42]3 years ago
6 0
Protons is the answer
Zigmanuir [339]3 years ago
4 0
the answer is protons
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The answer is number 1 - energy is emitted


Energy is released when an atom in an excited state returns to the ground state.
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Consider the reaction: Mg(OH)₂ (s) ⇌ Mg²⁺ (aq) + 2 OH⁻ (aq)
balandron [24]

The value of Kc for the equilibrium is 0.150 mole² / litre ²

<u>Explanation:</u>

<u>Given:</u>

An equilibrium mixture in an 1.00 L vessel contains 5.30 moles of  

Mg(OH )₂  0.800 moles of Mg²⁺ and 0.0010 moles OH₋  

We have to find the value of Kc

  • Step 1: Find  the equilibrium Concentration.
  • Step 2: Substitute the values in the equation.
  • Step 3: Find the value of Kc.
  • I have attached the document for the detailed explanation

The value of Kc for the equilibrium is 0.150 mole² / litre ²

Download pdf
8 0
3 years ago
2. Which pair of elements does not form an ionic bond?
Gekata [30.6K]

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Actually Welcome to the concept of Bond Formation.

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B.) O and Cl

These both are Non-Metals with high Electronegativity nature, hence none of them can share electrons to foram any bond to eventually form a Electro valentines Compound.

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Is the following statement about our solar system true or false?
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true

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