A welding fuel gas cointains carbon and hydrogen only .Burning a small sample of it in oxygen gives 3.38 g of carbon dioxide. 0.690 g of water and no other products. A volume of 10.0L(measured at S.T.P) of this welding gas is found to weight 11.6 g. Calculate molar mass of the gas

A sample of pure sodium carbonate 0.318g is dissolved in water and titrated with HCl solution. A volume of 60mL is required to reach the methyl orange end point. Calculate the molarity of the acid.

200 cm^3 of an aqueous solution of a protein contains 1.26g of the protein . The osmotic pressure of such a solution at 300K is found to be 2.7 xx 10^-3 bar. Calculate the molar mass of the protein (R=0.083 L bar mol^-1 K^-1 )

In a reaction ,5.3g of sodium carbonate reacted with 6g of ethanoic acid. The product were 2.2 g of carbon dioxide,0.9g water and 8.2g sodium ethanoate. Show that these observation are in agrement with the law of conservation of mass. Sodium carbonate + ethanoic acid rarr sodium ethanoate + carbon dioxde + water.

When 3.0 g of carbon is burnt in 8.00 g oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 3.00 g of carbon is burnt in 50.00 g of oxygen ? Which law of chemical combination will govern your answer ?

Dry ice is solid carbon dioxide. A 0.050 g sample of dry ice is placed in an evacuated 4.6 L vessel at 30^(@)C . Calculate the pressure inside the vessel after all the dry has been converted to CO_(2) gas.

A sample of 16 g charcoal was brought into contact with CH_(4) gas contained in a vessel of 1 litre at 27^(@) C . The pressure of gas was found to fall from 760 to 608 torr. The density of chacoal sample is 1.6 g//m^(3) . What is the volume of the CH_(4) gas adsorbed per gram of the adsorbent at 608 torr and 27^(@)C ? 125 L//g , 16.25 mL//g , 26 mL//g , none of these .