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4. A sample of carbon monoxide (CO) has a volume of 3 L at 85 °C with a pressure of 157 kPa. Determine the number ofmoles of CO that are present in the sample

Respuesta :

Answer:

0.1583moles

Explanations:

According to ideal gas equation;

[tex]PV=nRT[/tex]

where:

• P is the ,pressure, = 157kPa = 1.55atm

,

• V is the volume = 3L

,

• R is the Gas constant = 0.08205Latm/molK

,

• T is the temperature = 85 + 273 = 358K

Required

n is the number of moles

Substitute the given parameters

[tex]\begin{gathered} n=\frac{PV}{RT} \\ n=\frac{1.55\times3}{0.08205\times358} \\ n=\frac{4.65}{29.3739} \\ n=0.1583moles \end{gathered}[/tex]

Hence the number of moles of CO that are present in the sample is 0.1583moles

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