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Rama09 [41]
3 years ago
15

What is a reasonable estimate for the radius of an atom?

Chemistry
1 answer:
Romashka [77]3 years ago
7 0

Answer is: 1 × 10⁻¹⁰ meter or 0.0000000001 meter.


The atomic radius is a measure of the size of the atom.

It is distance from the center of the nucleus of atom to the boundary of electron cloud.

The radius of atoms is between 30 and 300 pm (10⁻¹² m)  or between 0.3 and 3 angstroms (10⁻¹⁰ m). 

The radius generally decrease along each period of the Periodic table.

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Consider the following system at equilibrium where H° = 111 kJ/mol, and Kc = 6.30, at 723 K.
Rashid [163]

Answer:

1) The value of Kc:

C. remains the same.

2) The value of Qc:

A. is greater than Kc.

3) The reaction must:

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4) The concentration of N2 will:

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Explanation:

Hello,

In this case, by means of the Le Chatelier's principle which is based on the shift a chemical reaction could have under some modifications, we have:

1) The value of Kc:

C. remains the same, since it just depend the reaction's thermodynamics as it is computed via:

ln(K)=\frac{\Delta _RG}{RT}

2) The value of Qc:

A. is greater than Kc, since the reaction quotient is:

Qc=\frac{[N_2][H_2]^3}{[NH_3]^2}

Thus, the lower the concentration of ammonia, the higher Qc, making Qc>Kc.

3) The reaction must:

B. run in the reverse direction to restablish equilibrium, since ammonia was withdrawn and should be regenerated to reach the equilibrium.

4) The concentration of N2 will:

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Best regards.

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