Question

The volume of a gas at 0 degree celsius and 700mm pressure

Answer 1

pls mark brainliest

Answer:

From ideal gas equation

PV = nRT

n = PV / (RT)

= 700/760 atm × 760 × 10⁻³ L / (0.0821 L atm / (mol K) × 273 K)

= 0.03 mol

= 0.03 × 6.022 × 10²³ molecules

= 1.80 × 10²² molecules

∴ 1.80 × 10²² molecules are present in the given volume.

Explanation:

I think ur question should be:

The volume of a gas at 0 c and 700mm of hg pressure is 760 cc. the number of molecules present in this volume is

Answer 2

Temp= 300k

Volume=300cm3 ,=3L

Pressure= 76cm hg ,=76bar

The temperature and pressure at STP are

298 K 1 Atm pressure

So substituting these on the equation

P1 V1 / T1 = P2 V2 / T2

That is

76×3/273 = 1×V2 / 298

That is

V2 = 76×3×298 / 273

= 248.9L