Find out the mass of `_8^16^O` and compare the result with the mass found from mass spectroscopy experiments.

Find out the mass of photon with wavelength 3.6 overset (@)A .

The mass of 16.4 dm^3 of a gas at STP is 22g. What is the molar mass of the gas?

Which postulate of Dalton's atomic theory is the result of the law of conservation of mass?

Does the escape speed of a body from the earth depend on the mass of the body,

Find the position of centre of the mass of the T-shaped plane from O,

How can you find the mass of earth, starting from the law of gravitation?

Find out the oxidation number of bromine in Br_3O_8

The radius of the Moon is frac(1)(4)^th the radius of the earth and its mass is frac(1)(96)^th the mass of the earth. If the escape velocity from the surface of the earth is 11.2k ms^(-1) , find the escape velocity from the surface of the Moon.

Define the term 'osmosis' and 'osmotic pressure'. What is the advantage of using osmotic pressure as compared to other colligative properties for the determination of molar masses of solute in solution.

The unit of length convenient on the nuclear scale is a fermi : 1 f = 10^(-15) m. Nuclear sizes obey roughly the following empirical relation : r = r_0A^(1/3) where r is the radius of the nucleus, A its mass number, and r_0 is a constant equal to about, 1.2 f. Show that the rule implies that nuclear mass density is nearly constant for different nuclei. Estimate the mass density of sodium nucleus. Compare it with the average mass density of a sodium atom obtained in Exercise. 2.27.