States of Matte...

The empirical formula of a  monobasic acid is $${CH}_{2}O$$. The vapour density of its ethyl ester is $$44$$. What is the Molecular formula of the acid?

The colourless gas X in the mixture is:

Plots of $$\cfrac { PV }{ RT } vsP$$ for 1 mole of $${ H }_{ 2 }$$, $${ NH }_{ 3 }$$ and $${ CH }_{ 4 }$$ gases are given. Match the curve with corresponding gases
  Curve                                          Gas
(i) Curve 'a'                                    p- $${ H }_{ 2 }$$ 
(ii) Curve 'b'                                   q- $${ NH }_{ 3 }$$ 
(iii) Curve 'c'                                   r- $${ CH }_{ 4 }$$ 

Moles of $$Na_2SO_4$$ to be dissolved in 12 mole of water to lower its vapour pressure by 10 millimeter Mercury at a temperature at which vapour pressure of pure water is 50 millimeters?

According to kinetic theory of gases :

3.6 gm of $$O_2$$ is adsorbed on 1.2 gr of metal powder. What volume of $$O_2$$ adsorbed per gram of the absorbant at 1 atm and 273K?

The pressure exerted by a mass of x mg resting on the area of 1.00 $${ cm }^{ 2 }$$ is 1.00 Pa, then x is

An inflated balloon has a volume of $$6.0L$$ at sea level ($$P=1atm$$) and is allowed to ascend in altitude until the pressure is $$0.4atm$$. During the rise, the temperature of the gas falls from $${27}^{o}C$$ to $$-{23}^{o}C$$. The volume of balloon at its final altitude is

The solubility of a specific non-volatile salt is 4g in 100 g of water at $${25}^{0}$$C. If 2.0g, 4.0g and 6.0g of the salt added of 100g of water at $${25}^{0}$$C, in system X, Y and Z. The vapour pressure would be in the order:

The vapour pressure of pure water at $$25^{\circ}C$$ is $$30\ mm$$. The vapour pressure of $$10\%\ (W/W)$$ glucose  solution at $$25^{\circ}C$$ is :