Answer:
Force of attraction = 35.96 N
Explanation:
Given: charge on anion = -2
Charge on cation = +2
Distance = 1 nm = m
To calculate: Force of attraction.
Solution: The force of attraction is calculated by using equation,
---(1)
where, q represents the charge and the subscripts 1 and 2 represents cation and anion.
k =
F = force of attraction
r = distance between ions.
Substituting all the values in the equation (1) the equation becomes
Force of attraction = 35.96 N
Answer:
Scientists know that today the Earth's magnetic field is powered by the solidification of the planet's liquid iron core. The cooling and crystallization of the core stirs up the surrounding liquid iron, creating powerful electric currents that generate a magnetic field stretching far out into space.
Each isotope of Oxygen has a different number of neutrons
<h3>Further explanation
</h3>
The elements in nature have several types of isotopes
Atomic mass is the average atomic mass of all its isotopes
Isotopes are atoms has the same number of protons but has a different number of neutrons.
So Isotopes are elements that have the same Atomic Number (Proton)
Some of the isotopes of oxygen are:
Each isotope has 8 protons and 8 electrons but has a different number of neutrons
For O-16: number of neutrons = 16-8 = 8
For O-17: number of neutrons = 17-8 = 9
For O-18: number of neutrons = 18-8 = 10
Answer:
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Explanation:
Answer : The value of equilibrium constant K at 298 K is, 56.59
Explanation :
The given chemical reaction are:
(1) ;
(2) ;
First we have to determine the standard free-energy change for the following reaction.
(3) ;
Now we are reversing the reaction 1 and then adding reaction 1 and 2, we get:
(1) ;
(2) ;
Now we have to calculate the equilibrium constant K at 298 K.
where,
= standard Gibbs free energy = -10kJ/mol = -10000 J/mol
R = gas constant = 8.314 J/K.mol
T = temperature = 298 K
= equilibrium constant = ?
Now put all the given values in the above formula, we get:
Therefore, the value of equilibrium constant K at 298 K is, 56.59