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Ask QuestionPosted by Zidart Yadav 3 years, 1 month ago
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Preeti Dabral 3 years, 1 month ago
In order to solve this problem, we will have to suppose that the percentage of one of the isotopes in the sample is x, so that the percentage of the other isotope in the sample will be (100 - x). Now :
(i) The mass of {tex}\cdot_8^{16} X{/tex} isotope is 16 u. Suppose its percentage in the sample is x %
(ii) The mass of {tex}\cdot_8^{18} X{/tex} isotope is 18 u. Its percentage in the sample will be (100 - x) %
So, Average atomic mass of {tex}X=16 \times \frac{x}{100}+18 \times \frac{(100-x)}{100}{/tex}
But the avergae atomic mass of X has been given to be 16.2 u. Therefore,
{tex}\begin{aligned}
& 16.2=16 \times \frac{x}{100}+18 \times \frac{(100-x)}{100} \\
& \text { or } 16.2=\frac{16 x+1800-18 x}{100} \\
& \text { or } 16.2 \times 100=1800-2 x \\
& \text { or } 2 x=1800-1620 \\
& \text { or } 2 x=180 \\
& \text { And } x=\frac{180}{2} \\
& \text { or } x=90
\end{aligned}{/tex}
Thus, the percentage of the isotope {tex}\cdot_8^{16} X{/tex} in the sample is 90 %. The percentage of the other isotope {tex}\cdot_8^{18} X{/tex} in the sample will be 100−90=10%
Posted by Prarthana Sajayan 3 years, 1 month ago
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Preeti Dabral 3 years, 1 month ago
Animal husbandry is the scientific management of animal livestock. It includes various aspects such as feeding, breeding and disease control. Animal husbandry usually include various aspects such as cattle, pig, sheep, poultry and fish which are useful for humans in various ways.
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Preeti Dabral 3 years, 1 month ago
Ionization energies measure the tendency of a neutral atom to resist the loss of electrons. It takes a considerable amount of energy, for example, to remove an electron from a neutral fluorine atom to form a positively charged ion.
Posted by Saurabh Pathak 3 years, 1 month ago
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Preeti Dabral 3 years, 1 month ago
Using equation of motion
2aS = Vf2 – Vi2
Putting the above mentioned values
2ad = V2 – 0
a = V2/2d
Now force is given by
F = ma
Putting the value of acceleration
F = m(V2/2d)
As we know that
Work done = Fd
Putting the value of F
Work done = (mv2/2d)(d)
Work done = mV2/2
OR
Work done = ½ mV2
Since the work done is motion is called "Kinetic Energy"
i.e.
K.E. = Work done
OR
K.E. =1/2mV2
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Perpetual motion is the motion of bodies that continues forever in an unperturbed system. A perpetual motion machine is a hypothetical machine that can do work infinitely without an external energy source. This kind of machine is impossible, as it would violate either the first or second law of thermodynamics or both.
Posted by Konda Rajendrababu 3 years, 1 month ago
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During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
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Preeti Dabral 3 years, 1 month ago
Dubbed "the king of cocaine", Escobar is the wealthiest criminal in history, having amassed an estimated net worth of US$30 billion by the time of his death—equivalent to $70 billion as of 2022—while his drug cartel monopolized the cocaine trade into the United States in the 1980s and early 1990s.
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