At 1250 mmhg and 750c, the volume of a sample of ammonia gas is 6.8 l. what volume would the ammonia occupy at stp?

V₂ = 3 L

Explanation:

Given data:

Initial volume = 6.8 L

Initial pressure = 1250 mmHg (1250/760 =1.64 atm)

Initial temperature = 750°C (750 +273 = 1023 K)

Final temperature = 273 K

Final volume = ?

Final pressure = 1 atm

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 1.64 atm × 6.8 L × 273 K / 1023 K × 1 atm

V₂ = 3044.5 atm .L. K / 1023 K. atm

V₂ = 3 L

The Sahara Desert still exists and it is located in Northern Africa in countries such as Egypt, Libya, Algeria, Morocco, Sudan, and others. Southern Africa has entirely different climate and does not contain a desert like the Sahara.