The inner (plasma) membrane of E. coli is about 75% lipid and 25% protein by weight.  How many molecules of membrane lipid are there for each molecule of protein?  (Assume that the average protein is Mr 50,000 and the average lipid is 750.)

TLS Online TPP Program

#Question id: 20163

#XL - P Chemistry

The uncertainty in the position of an electron (mass 9.1 × 10^–28 g) moving with a velocity of 3.0 x 104 cms^–1 accurate up to 0.011% will be

TLS Online TPP Program

#Question id: 20164

#XL - P Chemistry

The radius of hydrogen atom in the ground state is 0·53 Å, the radius of ₃Li²⁺ in the similar state is

TLS Online TPP Program

#Question id: 20165

#XL - P Chemistry

Splitting of spectral lines under the influence of magnetic field is called

TLS Online TPP Program

#Question id: 20166

#XL - P Chemistry

The total number of orbitals in a shell with principal quantum number ‘n’ is

TLS Online TPP Program

#Question id: 20167

#XL - P Chemistry

Which of the following expressions gives the de-Broglie relationship ?

TLS Online TPP Program

#Question id: 20168

#XL - P Chemistry

The uncertainty in the momentum of an electron is 1·0 × 10^–5 kg ms^–1. The uncertainty in its position will be (h = 6·62 x 10^–34 kg m2s^–1)