What is the molecular weight of the gas, 0.64 gm of which occupies 244 ml at S.T.P.?

A solution containing 2.5 g of a non-volatile solute in 100 gm of benzene boiled at a temperature 0.42K higher than at the pure solvent boiled. What is the molecular weight of the solute? The molal elevation constant of benzene is "2.67 K kg mol"^(-1) .

A gaseous hydrocarbon contains 75% carbon by mass. 100cm^(3) of this gas at STP weighs 0.072g. What is the molecular formula of the hydrocarbon? [Weight of 1 litre hydrogen at STP=0.09g]

432 mL of gas A effuses out through a fine orifice in 36 min. 288 mL of another gas B effuses out through the same orifice in 48 mon. if the molecular weight of B is 64, what is the molecular weight of A?

What will be the volume of a gas at N.T.P. which occupies 3L at 27^@C and 760 mm of Hg pressure.

If M is the molecular weight of a gas, what is the difference between the two specific heats of 1 g of an ideal gas?

A gaseous hydrocarbon contains 75% C by weight. 1L of this gas at STP weighs 0.72 g. what is the molecular formula of the hydrocarbon? [weight of 1 L of hydrogen at STP=0.09g].

The density of a gas A is thrice that of a gas B at the same temperature. The molecular weight of gas B is twice that of A. what will be the ratio of the pressures acting on B and A-

The specific heat capacities of hydrogen at constant volume and at constant pressure are 2.4 cal/gm ^@C and 3.4 cal/gm ^@C respectively. The molecular weight of hydrogen is 2 gm/mole and the gas constant R=8.3xx10^7 erg/mole ^@C . Calculate the value of J.

29.2% (wiW) HCI stock solution has density of 1.25 g mL^-1 . The molecular weight of HCl is 36.5 g mol^-1 . The volume (mL) of stock solution required to prepare a 200 mL solution 0.4 M HCI is