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Chapter 2: Q13-124CP (page 40)

Air in a smoky bar contains4.0脳10-6mol/Lof CO. What mass of CO is inhaled by a bartender who respires at a rate of 11 L/min during an 8.0-h shift?

Short Answer

Expert verified

Mass of CO inhaled by a bartender is 0.59g.

Step by step solution

01

Molarity

Molarity is defined as number of moles per litre solution.

molarity =no. of moles of solute

volume of solventmolarity=(no.鈥�of鈥�moles鈥�of鈥�solute)(volume鈥�of鈥�solvent)

Volume of air =11鈥�L/min脳8h=11鈥�L/min脳8脳60min=5280L

Hence, the number of moles CO of can be calculated as follow;

number鈥�of鈥�moles鈥�of鈥�CO=molarity脳volume鈥�of鈥�air

Molarity of CO is4.0脳10-6mol/L and volume of air is 5280L.

numberofmolesofCO=4.0脳10-6mol/L脳5280L=0.02112moles

02

Mass of CO

Mass of CO can be calculated by multiplying number of moles of CO and molecular mass of CO.

Molecular mass ofCO=12+16=28

massofCO=no.ofmolesofCO脳molecularmassofCO=0.02112mol脳28g/mol=0.59g

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