Question

A balloon is floating around outside your window. The temperature outside is -5 ∘C , and the air pressure is 0.700 atm . Your neighbor, who released the balloon, tells you that he filled it with 4.80 moles of gas. What is the volume of gas inside this balloon?

Answer 1

Answer:

• 151 liter

Explanation:

You can calculate the volume of gas inside the ballon using the ideal gas equation:

• pV = nRT

Where,

• p = absolute pressure
• V = volume occupied by the gas
• n = number of moles
• T = absolute temperature (add 273.15 to convert from °C to K)
• R = universal gas constant = 0.08206 atm-liter / k-mol

Solving for V:

• V = nRT / p

Substituting the data into the formula:

• T = - 5 + 273.15 K = 268.15 K

• V = 4.80 moles × 0.08206 atm-liter/k-mol × 268.15K / 0.700 atm

• V = 151 liter (using 3 significant figures) ← answer