jjxkv221gf

Consider the trigonal bipyramidal tungsten complex: [W(CO)3(PMe3)2]
(i) Draw the structure of the cis- and trans-isomers.
(ii) Discuss how you would use NMR to distinguish between the isomers.
(iii) Discuss how you would use IR spectroscopy to distinguish between the isomers.
(iv) Explain how the IR spectrum (CO region) would change if the PMe3 ligands were replaced with PF3 ligands.
(Illustrate your answer with suitable diagrams)

You are given a mixture of toluene, aniline and benzoic acid dissolved in chloroform. explain in detail with the aid of a flow diagram and reaction schemes, how would you separate the mixture into pure components

When 22.4 J was added as heat to a particular ideal gas, the volume of the gas changed from 51 cm³ to 100 cm³ while the pressure remained at 1 atm.

(a) By how much did the internal energy of the gas increase? 
(b) If the quantity of gas present was 2×10^-3 mol, find c_p
(c) Find c_v . [J/mol·K]

An ideal gas with 3.00 mol is initially in state 1 with pressure atm and volume . First it is taken to state 2 with pressure .Then it is taken to state 3 with preseure and volume  

What is the temperature of the gas in (a) state 1 and (b) state 2? (c)What is the net change in internal energy from state 1 to state 3?

An ideal gas with 3.00 mol is initially in state 1 with pressure p₁ = 23.0 atm and volume V₁ = 1250 cm³. First it is taken to state 2 with pressure p₂ = 1.5 p₁ and the volume V₂ = 2V₁. Then it is taken to state 3 with pressure p₃ = 2p₁ and volume V₃ = 0.5 V₁.

(a) What is the temperature of the gas in state 1? K
(b) What is the temperature of the gas in state 2? K
(c) What is the net change in internal energy from state 1 to state 3? J

 The Earth reradiates the energy it receives from the Sun as a black body. We can calculate the effective temperature of the Earth using the Stefan-Boltzmann equation   where we solve for the Temperature T. We use for the energy flux the amount of energy absorbed per second Le divided by the.

Earth's surface area from which the energy is radiated    so that the flux is  . Here d is the radius of the Earth given above and s is the Stefan-Boltzmann constant. And the effective temperature is: __________________   and taking the square root of    twice in succession we get the effective Temperature    _________________ K for the temperature of the effective Earth. What is the temperature in the Celsius scale? __________ C.

(Do I need to tell you how to convert from Kelvin to Celsius? If you don't know look it up in your textbook!!)  

For a wavelength of 10 m, or a frequency of 30 MHz, the effective area of a single dipole is 11.9 m². The Long Wavelength Array Station (LWA1) has 256 such dipoles, so the effective collecting area is 3056 m². This is the equivalent of a geometric area of 64 m filled aperture.

(a) For the "Long Wavelength Array station 1 (LWA1)", what is the effective area if it does operate at 25 m

(b) What will be the effective collective area if the LWA1 has 256 dipoles?

(c) What will be the diameter of the filled aperture?

(d) If the power pattern is as given by  , and the brightness distribution  given by in the sky, derive the antenna temperature T_A as given by

Solve Question 4 attached in the screen shot below. Thank you

Question 3 thank you

If you had an original yield of 4 servings, and your desired yield is 24 servings, what would your multiplying factor be to adjust the yield? 

  Question 5 options:

4

8

2

6