Physical Chemistry Answers

For a certain first order reaction, half life is 100s, how long will it take to be 75% completed

Electron scattering by isolated atoms and molecules occurs in the gas phase. It plays a key role in plasma physics and chemistry and it's important for such applications as semiconductor physics.

Electron scattering experiment provides most accurate values of the sizes of atomic nuclei.

Estimate the rough energy of electron required for this.

Ans: ~250 MeV

Consider the reaction MnO2 + 4HCI → MnCl2 + Cl2 + 2H2O. If the both the

reactants have a mass of 100 grams, which of the two will be used up first? How

many grams of MnCl2 will be produced after the reaction? (MnO2 =

86.94 g/mol, HC1 = 36.46 g/mol, MnCl2 = 125.8 g/mol)

Electron scattering by isolated atoms and molecules occurs in the gas phase. It plays a key role in plasma physics and chemistry and it's important for such applications as semiconductor physics.

Electron scattering experiment provides most accurate values of the sizes of atomic nuclei.

Estimate the rough energy of electron required for this.

Ans: ~250 MeV

Note: The electron must be treated as relativistic

Consider two normalized eigen functions and , corresponding to the same eigen value. If

Integral a1a2*dT = d

where is real

Find a normalized linear combinations of and that are orthogonal to

(a) a1

(b) a1+a2

Note: The coefficients of the linear combinations need not be real

Using the ΔHf data provided, calculate ΔH in kJ mol-1 for the following reaction: 

2NO2(g) ⇋ N2O4(g)

According to Langmuir's theory of

adsorption, molecules adsorbing

from the adjacent phase:

The reaction between solid white phosphorus and oxygen produces solid tetraphosphorusdeoxide (P+O2-

25cm^3 of magnesium Chloride compleatly reacted with 12.5cm^3 of 0.2M silver nitrate to precipitate silver Chloride .Haw many grams of magnesium Chloride are contained in 500cm^3 of the solution

How do I write the formula for a galvonic cell including Ni(s) Ni2SO4(aq) and Mg(s) MgSO4(aq)