Which of the following equations listed below corresponds to the standard molar

Question

Which of the following equations listed below corresponds to the standard molar enthalpy of formation delta Hdegree for NH_4NO_3 NH_4^+ (aq) + NO^-_3 (aq) rightarrow NH_4NO_3 (s) NH_3 (g) + HNO_3 (g) rightarrow NH_4NO_3 (s) N_2 (g) + 2H_2 (g) rightarrow 3/2 O_2 (g) rightarrow NH_4NO_3 (s) 2 N_2 (g) + 4 H_2 (g) + 3 O_2 (g) rightarrow 2 NH_4NO_3 (s) 2 N (g) + 4 H (g) + 3 O (g) rightarrow NH_4NO_3 (s) Which of the following regions of the electromagnetic spectrum have longer wavelengths than visible light? 1. infrared radiation 2. ultraviolet radiation 3. microwave radiation 1 only 2 only 3 only 1 and 2 1 and 3 If a radio wave a frequency of 17.0 MHz, what is the wavelength of this radiation? (1 MHz = 1 times 10^6 s^-1) 5.10 times 10^15 m 5.67 times 10^-2 m 5.88 times 10^-2 m 1.76 times 10^1 m 1.76 times 10^6 m For which of the following transitions would a hydrogen atom absorb a photon with the longest n = 1 to n = 2 n = 4 to n = 8 n = 5 tp n = 4 n = 7 to n = 6 n = 6 to n = 7 Only one set of quantum numbers listed is a correct set. Which one? (n, 1, mg, m_s) 3, 2, 0, 1/2 2, 2, -2, 1/2 3,3,-3,1/2 4,4,-3,1/2 none of these The possible values of the magnetic quantum number, m. of a 3d electron are: 1, 2, 3 0, 1, 2 -2, -1, 0, 1, 2 -1, 0, 1 none of these

Explanation / Answer

31) infrared radiationr and microwave radiation.

32) v= c/wavelength; wavelength= c/v; wavelength= 3*108/17*106 = 17.64 m = 1.764*101 m.

33) E= R*(1/ni2-1/nj2) ; R Reydberg constant, ni and nj are principle quatum number.

Lowest energy transtion gives longest wavelength.

By solving above we get Lowest energy transtion for 7 to 6. so it shows longest wavelength

34) a )3,2,0,1/2 is the only correct set of quantum numbers.

35) Possible number of magnetic quantum number is given by -l to +l including 0.

For 3d, l=2 so magnetic quantum numbers varie from -2,-1,0,1,2.

36) carbon have that electronic configuration in ground state.

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