Web Analytics
Answered

PLEASE HELP!!!! ASAPP


Determine the number of moles of air present in 1.35 L at 750 torr and 17.0°C. What is the number of moles present?

Verified Answer :

Answer : The number of moles of air present is, 0.055 mole

Solution :

Using ideal gas equation :

\(PV=nRT\)

where,

P = pressure of the gas = 750 torr = 0.98 atm      (1 atm = 760 torr)

V = volume of the gas = 1.35 L

T = temperature of the gas = \(17^oC=17+273=290K\)

R = gas constant = 0.0821 Latm/moleK

n = number of moles of air = ?

Now put all the given values in this formula, we get the number of moles of air present.

\((0.98atm)\times (1.35L)=n\times (0.0821Latm/moleK)\times (290K)\)

\(n=0.055mole\)

Therefore, the number of moles of air present is, 0.055 mole

Answer:

.056

Explanation:

7501.35/

62.396290=.05595778

n=.056