States of Matte...

$$P_{total} = P_{1} + P_{2} + P_{3} + ....$$ which of the following is correct about the expression?

Five litres of gas at $$STP$$ have a mass of 12.5 $$g$$.What is the molecular mass of the gas?

Which of the following expressions is equal to the number of iron ($$Fe$$) atoms present in $$10.0$$ g $$\displaystyle Fe$$ ? (atomic mass of $$\displaystyle Fe$$ = $$55.9$$ amu) 

A gas is confined in the manometer as shown below. The stopcock is then opened and the highest level of mercury inside the tube moved to a level that is 80 $$mm$$ above its lowest level. What is the pressure of the gas? 

What types of conditions are considered non-ideal ?

All gases have the same number of moles in the same volume at constant T and P is stated by :

Regarding the kinetic molecular theory, which of the following statement is not true?

The total pressure of a gaseous mixture is equalto the sum of the partial pressures is:

Calculate the number of iron atoms in a piece of iron weighing $$2.8 g$$. (Atomic mass of iron $$=56$$)

Which of the following will diffuse faster than the others?