Question

A 0.80 L sample of gas has a temperature of 27°C and a pressure of 0.925 atm. How many moles of gas are present?

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Answer 1

n= 0.03 moles

Step-by-step explanation:

Using the ideal gas law:

PV=nRT

nRT=PV

n= PV/RT

n: moles

P: pressure in atm

V= volume in L

R= Avogadro's constant = 0.0821

T= Temperature in K => ºC+273.15

n= (0.925 atm)(0.80 L) / (0.0821)(300.15 K)

n= 0.03 moles