Asample of gas occupies 250 ml under laboratory conditions
of27oc and 740 mmhg pressure. what is the volume
atstandard temperature and pressure conditions?

Answer : The volume at standard temperature and pressure conditions is, 222 mL

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

where,

= initial pressure of gas = 740 mmHg

= final pressure of gas = 760 mmHg

= initial volume of gas = 250 mL

= final volume of gas = ?

= initial temperature of gas =

= final temperature of gas =

Now put all the given values in the above equation, we get:

Therefore, the volume at standard temperature and pressure conditions is, 222 mL

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but