What is the density of `SO_2` gas at `27^@C` at 2 atmospheric pressure?(R = 0.08219 atm `K^(-1) mol^(-1)`

100 mg of a protein is dissolved in just enough water to make 10.0 mL of solution. If this solution has an osmotic pressure of 13.3mm Hg at 25^@C , what is the molar mass of the protein? (R = 0.0821L atm mol^-1 K^-1 and 760mm Hg = 1atm)

At S.T.P. the value of R is ----------- Latm K^(-1) mol^(-1)

Calculate the total pressure in a mixuture of 8g of dioxygen and 4g of dihydrogen confined in a vessel of 1dm^3 at 27^@ . (R = 0.083 bar dm^3 K^(-1) mol^(-1)

The activation energy of a reaction is 75.2 KJ mol^-1 in the absence of a catalyst and 50.14 Kjmol^-1 with a catalyst. How many times will the rate of reaction grow in the presence of the catalyst if the reaction proceeds at 25^@C ? (R = 8.314 JK^-1mol^-1)

Find the pressure required to compress a gas adiabatically at atmospheric pressure to one fifth of.its volume. Given square= 1.4,log_e 5 = 0.6990 .

2.9g of a gas at 95^@C occupied the same volume as 0.184g of dihydrogen at 17^@C at the same pressure. What is the molar mass of the gas.

The average K.E. of the thermal neutrons are similar to that of molecules of a real gas. Find the wavelength of thermal neutrons at 27°C ( mass of neutron = 1.0086 amu, k = 1.38 xx 10 ^(-23) J /K.

What concentration of nitrogen should be present in a glass of water at room temperature at 25^@C , a total pressure of 1 atm and mole fraction on nitrogen in air of 0.78 [ K_H for nitrogen = 8.42xx10^(-7)M//mmHg ].

Answer the following questions based on the P-T phase diagram of CO_2 : (a) CO_2 at 1 atm pressure and temperature - 60 ^@C is compressed isothermally. Does it go through a liquid phase?

For a decomposition reaction, the values of rate constants at two different temperatures are given below: K_1 = 2.15xx10^-8 Lmol^-1s^-1 at 650k K_2 = 2.39xx10^-7 Lmol^-1s^-1 at 700k Calculate the value of activation energy for the reaction (R = 8.314 JK^-1 mol^-1 )