Chem 171 F09 Q6 CO2 TernMix Key

Chem 171 F09 Q6 CO2 TernMix Key - Chem 171 Quiz 6 Version A...

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Chem 171 Quiz 6 Version A (5 pts each) (Show work, unit, sig fig for full credit) 1. Calculate the pressure exerted by a column of mercury 70.0 cm high. Express the pressure in pascals and in atmospheres. The density of mercury is 13.5951 g / cm 3 . PV = nRT. R = 0.08206 L atm mol -1 K -1 . 1 atm = 101,325 Pa = 760 Torr. g = 9.80665 m / s 2 . 1 kgm/s 2 = 1 N. 1 N/m 2 = 1 Pa. P=hdg. Pressure = Force / area. Force = Mass x g. Mass = volume x density. Volume = area x height P = volume x density x g /area P = area x height x density x g / area = hdg P = 0.700 m x 1.35951 x 10 4 kg / m 3 x 9.80665 m / s 2 = 9.33 x 10 4 Pa 9.33 x 10 4 Pa x 1 atm / 101,325 Pa = 0.921 atm 2. The following questions refer to the experiment entitled “Physical Separation of a Ternary Mixture”: What is a mixture? What is a homogeneous mixture? What is a heterogeneous mixture? A mixture is a combination of two or more substances in which the substances retain their distinct identities. A homogeneous mixture is a mixture where the composition of the mixture is uniform throughout. A heterogeneous mixture is a mixture where the composition of the mixture is not uniform. Chem 171 Quiz 6 Version B
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This note was uploaded on 03/04/2012 for the course CHEM 171 taught by Professor Several during the Fall '08 term at Rutgers.

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Chem 171 F09 Q6 CO2 TernMix Key - Chem 171 Quiz 6 Version A...

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