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

34.05 mL of phosphorus vapour weighs 0.0625g at 546^@C and 1 bar pressure. What is the molar mass of phosphorus?

A gas occupies 22.4 L in NTP. Calculate the volume occupied it at 30^@C and 665 mm pressure.

At what temperature, volume of an ideal gas at 0^@C becomes triple ?

A solution containing 30g of non-volatile solute exactly in 90g of water has a vapour pressure of 2.8 kPa at 298 K. Further, 18 g of water is then added to the solution and the new vapour pressure becomes 2.9 kPa at 298 K. Calculate: molar mass of the solute

A geyser heats water flowing at the rate of 3.0 litres per minute from 27^@ C to 77 ^@C . If the geyser operates on a gas burner. What is the rate of consumption of the fuel if its heat of combustion is 4.0×10 4 J/g?

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)

A steel tape 1m long is correctly calibrated for a temperature of 27.0 ^@C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0 ^@C . What is the actual length of the steel rod on that day? What Is the length of the same steel rod on a day when the temperature is 27.0 ^@C ? Coefficient of linear expansion of steel = 1.20xx10^-5 K^-1 .

2.0mol of N_2 gas is kept in a vessel of volume 0.020m^3 and the temperature was maintained at 60^@C . Calculate the pressure of the gas.(Assume that N_2 gas is ideal)

An antifreeze solution is prepared from 222.6 g of ethylene glycol (C_2H_6O_2) and 200 g of water. Calculate the molality of the solution. If the density of the solution is 1.072 g mL^-1 , then what shall be the molarity of the solution?