Hello!
We have the following data:
f (radiation frequency) = 
v (speed of light) =
λ (wavelength) = ? (in m)
Let's find the wavelength, let's see:




I Hope this helps, greetings ... DexteR! =)
Size and shape is a physical property of a substance
<h3>Answer:</h3>
Compound A is Ethylbenzene.
<h3>Explanation:</h3>
The structure of Ethylbenzene was elucidated and finalized based on following facts:
1) The presence of multiplet signal ranging from δ 7.27 to 7.40 ppm confirms the presence of aromatic protons. Also the statement says that this signal is for 5 protons indicating that the benzene ring is mono substituted.
2) The substituted group on benzene is Ethyl because the quartet for two protons shows that two protons (-CH₂-) are coupled with a CH₃ group. Hence, the ethyl group gives one quartet and one triplet signal.
3) The chemical reaction stated in statement is Nitration reaction. Also, the alkyl group (ethyl) is ortho-para directing in nature. Hence, it will give two products i.e. 1-Ethyl-2-nitrobenzene and 1-Ethyl-4-nitrobenzene respectively.
Attached figure gives the calculated NMR spectrum of Ethylbenzene and the chemical shifts calculated are almost near to the given values. Also, the two products formed are shown.
In an ionic bonds, ions are bonded together by the attraction of oppositely charged ions. A covalent bond is a chemical bond where electron pairs are shared between elements. Hope this helps!
To solve this we assume that the gas is an ideal gas.
Then, we can use the ideal gas equation which is expressed as PV = nRT. At a
constant volume and number of moles of the gas the ratio of T and P is
equal to some constant. At another set of condition, the constant is still the
same. Calculations are as follows:
T1/P1 = T2/P2
P2 = T2 x P1 / T1
P2 = 293 x 748 / 525
<span>P2 = 417.46 kPa</span>