Question

Calculate the number of moles of an ideal gas if it occupies 1750 dm3 under 125,000 Pa at a temperature of 127 C.

Answer 1

Answer:

65.81

Explanation:

Educere/ Founder's Education Answer

Answer 2

Hey there!

* Converts 1750 dm³ in liters :

1 dm³ = 1 L so 1750 dm³ = 1750 liters

* Convertes 125,000 Pa in atm :

1 Pa = 9.86*10⁻⁶ atm so 9.86*10⁻⁶ / 125,000 => 1.233 atm

* Convertes 127ºC in K :

127 + 273.15 => 400.15 K

R = 0.082 atm.L/mol.K

Finally, it uses an equation of clapeyron :

p * V = n * R * T

1.233 * 1750 = n * 0.082 * 400.15

2157.75 = n * 32.8123

n = 2157.75 / 32.8123

n = 65.76 moles

hope this helps!