Write the important physical properties of liquids.

Isochores are drawn at

What volume does a gas occupy at $STP$?

At $T \ K$ and pressure $P$,the diffusion rate of an ideal gas is $120 \ mL \ min^{-1}$. What is the time taken (in sec.) for $3000 \ mL$ of this gas for diffusion at same temperature and pressure?

$300 \ mL$ of a gas '$x$' of molar mass $32 \ g \ mol^{-1}$ is effused in $25 \ s$. What volume of methane would effuse in the same time (in $mL$)?

When the pressure of $1 \ mol$ of ammonia gas changes from $1 \ atm$ to $0.5 \ atm$ at constant temperature,the number of molecules will: