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Ask QuestionPosted by Jeevan B. K 4 years, 11 months ago
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Gaurav Seth 4 years, 11 months ago
Calcualte the energy of one mole of photons of radiation whose frequency is 5 x 1014Hz.
<hr />A n s w e r ;
Energy (E) of one photon = hv
Here, h = 6.626 x 10-34 Js
v = 5 x 1014 s-1
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Yogita Ingle 4 years, 11 months ago
To calculate % gornic character we consider 100 % iconic bond.
μ=Q×d
=(1.60×10−19C)×0.83×10−10m×(1D/ 3.336×10−30)
% gonic character =1.82/3.980 ×100
=45.70%
% covalent character = (100-% ginoc character)
=54.3%
Posted by Royal Thakur ? 4 years, 11 months ago
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Pk ⚔️ 4 years, 11 months ago
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Posted by Harsha C.D 4 years, 11 months ago
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Yogita Ingle 4 years, 11 months ago
No. Two atoms of the same chemical element are typically not identical.
Posted by Harsha C.D 4 years, 11 months ago
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Yogita Ingle 4 years, 11 months ago
No. Two atoms of the same chemical element are typically not identical. First of all, there is a range of possible states that the electrons of an atom can occupy. Two atoms of the same element can be different if their electrons are in different states. If one copper atom has an electron in an excited state and another copper atom has all of its electrons in the ground state, then the two atoms are different.
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Aadya Singh 4 years, 11 months ago
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Aadya Singh 4 years, 11 months ago
ha bro.. Ho gya.. Apka??
Aadya Singh 4 years, 11 months ago
So jao sbb.. Vrna hastar aa jayega ???????
Posted by Royal Thakur ? 4 years, 11 months ago
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Yogita Ingle 4 years, 11 months ago
Electron gain enthalphy for oxygen is negative because oxygen being an electronegative atom can easily accept electron.
But gaining one more electron to O2 will mean much more stability,so it is be an exothermic reaction.This expectation is true if we consider a neutral species but as O− is negligibely charged adding another negativelly charged species will be diffcult as the like charges will repel each other ,so in order to force the electronn to fuse with O− ion we supply energy in form of heat .This males it endothermic.
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Gaurav Seth 4 years, 11 months ago
Boyle’s Law
- Boyle’s law was stated by Robert Boyle.
- It states that at constanttemperature, the pressure of a fixednumber of moles nof gasvaries inversely with its volume.
k1 = Proportionality constant.
- It depends upon the amount and temperature of gas. It also depends upon the units in which p as well v are expressed.
- Let volume V1 is occupied at pressure P1 and temperature T1.
- Again volume V2 is occupied at pressure P2 and temperature T2. Mathematically, as per Boyle’s law:
P1 V1= P2 V2 = Constant
P1/P2 = V2/V1
- The curve corresponding to differentconstant temperature is calledisotherm.
- Highercurves correspond to higher temperature.
- The graph represents a straight line passing through the But under high pressures gases
deviate from Boyle’s law and consequently there is no straight line in the graph. - This signifies that gases become denser at high pressure.
- Density is defined as the ratio of mass by volume. Desity = Mass/ Volume = m/v
- Using the value of v from Boyle’s law equation, value of d can be further modified as
Posted by Rahul Garg 4 years, 11 months ago
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Gaurav Seth 4 years, 11 months ago
The atomic number of Chlorine (Cl) is 17. Thus its electronic configuration is [Ne]3s23p5 or 1s22s22p63s23p5
Explanation:
In order to write the Chlorine electron configuration we first need to know the number of electrons for the Cl atom (there are 17 electrons). When we write the configuration we'll put all 17 electrons in orbitals around the nucleus of the Chlorine atom.
In writing the electron configuration for Chlorine the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons for Chlorine go in the 2s orbital. The next six electrons will go in the 2p orbital. The p orbital can hold up to six electrons. We'll put six in the 2p orbital and then put the next two electrons in the 3s. Since the 3s if now full we'll move to the 3p where we'll place the remaining five electrons. Therefore the Chlorine electron configuration will be 1s22s22p63s23p5.
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Gaurav Seth 4 years, 11 months ago
Solution
By applying the uncertainty principle,
{tex}\displaystyle \Delta P = \frac {h}{4 \pi \Delta x} = \frac {6.626 \times 10^{-34} }{4 \times 3.1416 \times 0.002 \times 10^{-9} } = 2.63 \times 10^{-23}\ kg\ m/s{/tex}
The uncertainty in momentum is,
{tex}\displaystyle \frac {h}{4 \pi m \times 0.002 \times 10^{-9} } = \frac {h \times 5 \times 10^{11} }{4 \times \pi \times m}{/tex}
This is much larger than the actual momentum, i.e,
{tex}\displaystyle \frac {h}{4 \pi m} \times 0.05\ nm{/tex}. Hence, it cannot be defined.
Posted by Bhanvi Chauhan 4 years, 11 months ago
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Yogita Ingle 4 years, 11 months ago
Stoichiometry as the calculation of products and reactants in a chemical reaction. It is basically concerned with numbers.
Stoichiometry is an important concept in chemistry that helps us use balanced chemical equations to calculate amounts of reactants and products. Here, we make use of ratios from the balanced equation. In general, all the reactions that take place are dependent on one main factor, how much substance is present.
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Yogita Ingle 4 years, 11 months ago
energy = number of photons * energy in one photon
= n h v
= 6.023 × 10²³ × 6.626 × 10⁻³⁴ × 5 × 10¹⁴ Joules
= 199.54 kJoules
1Thank You