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<span>In the celebrated equation e = mc2, the c2 is the </span>proportionality constant of energy and mass.
This famous equation was proposed by Albert Einstein in 1905, and implies that when there is a certain mass, there is a certain amount of Energy associated with it even is the mass is in a steady state. The proportionality constant c² is the speed of light squared.
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Answer:
8,588,461,537
Explanation:
Since the atoms are arranged in a straight line in contact with each other what we have to do is divide the length into the diameter of copper (2r) to obtain the number of atoms in the 223.3 cm of copper wire, and from there we can figure how many times we wil have to divide it to answer our question.
diameter = 2 x( 1.3 x 10⁻¹⁰ m) = 2.6 x 10⁻¹⁰ m
The number of diameters in 223.3 cm ( 2.233 m ) which is the number of atoms in this length:
2.233 m / 2.6 x 10⁻¹⁰ m/atom = 8,588,461,538 atoms
So we will have to divide it 8,588,461,537 ( one minus because we want to sepate 8,588,461,538 atoms )
This is a problem where we have to work with integers and not decimals since we can not speak for example of 0.5 individual atoms
4NH3+5O2 <=>4NO + 6H2O
Using the definition of Kp, we have
Kp=(Pno^4*Ph2o^6)/(Pnh3^4*Po2^5)
where Pno=partial pressure of NO, etc.
The numerical value for a given temperature can be evaluated when the actual partial pressures are known.
Lead chloride rises five fold in solubility on heating at temperature of .
Solubility is defined as the capability of solute to dissolve in the solvent. It can be determine in terms of maximum quantity of particle or solute is dissolved in a solvent at equilibrium.
Five fold in solubility refers to the five times increase in solubility. Maximum five folds of solubility can be obtained from lead chloride .
At room temperature, lead chloride is not soluble in water but in hot water lead chloride is soluble in water i.e. at .
Thus, five folds in solubility can be obtained from lead chloride in comparison to other chlorides as they don't give five folds in solubility.
The mass of a proton = 1.6726219 × 10^-27 kg.
It’s almost the exact same number as the mass of a neutron, which is 1.674927471×10^-27 kg. The mass of an electon is much less, even negligible.
I hope this helped you out!