Home

What is the correct answer?

4

The number of molecules in 4.25 gm of ammonia are approximately

A. 0.5×1023

B. 1.5×1023

C. 2.5×1023

D. 3.5×1023

Correct Answer :

B. 1.5×1023


Related Questions

In the process of sublimation, the substance transforms directly The pressure of the ideal gas is less than the real gas because of the The ratio of RMS velocity to average velocity of a gas molecule at a particular… The ionic radii of Rb+ and Br- ions are 1.47 A° and 1.95 A°,… Lattice energy of a solid is high if In the wurtzite structure sulphur atoms have The vapour density of completely dissociated sociated NH4CL would be Avogadro stated that under similar conditions of temperature and pressure… Indicate the most viscous liquid of the following Vapour density of a gas is 35.5. The volume occupied by 3.55 gm of the… A gas or vapour may be liquefied only at a temperature at or The number of tetrahedral and octahedral voids per atom in a crystal lattice… At 303 K ethanol has a vapour pressure of about 0.118 atm., acetic acid… The wt. of 2.8 litres of a gas at N.T.P. is 3.50 gms. Its V.D. is The molecular weight of a volatile liquid can be determined by Four 1 litre flasks are separately filled with hydrogen, helium, oxygen… The vapour density of pure ozone would be The molecular velocity of any gas is Which of the following contains the same number of atoms as 12 gms: of… All gases tend to show ideal behaviour Molecular formula of D in the above case is In a dose packed arrangement of N spheres, the number of tetrahedral holes… The relation between molecular wt. and vapour density is In a face centred cubic arrangement of ions, the coordination number of… Which of the following methods is used to determine the atomic weight? If all the octahedral sites in a cubic close packed arrangement (B-) are… The coordination number of each sphere in hcp arrangement is In anti-fluorite structure the negative ions In NaCl type structure, the coordination number of the cation and anion… The radii of A+ and X- are 95 pm and 181 pm respectively. Coordination…