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Quiz 2, Sp 08 - ChE2114 Second Quiz February 1 2008 g =...

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Unformatted text preview: ' ChE2114 Second Quiz _ February 1, 2008 - g = 9.81 ms2 1. [25 points) An aqueous solution of nitric acid is 70.0 mass % HN03 and has a specific gravity of 1.42. The molecular weight of HNO3 is 63.0. What is the molarity (moles of HN03 per liter of solution) for this solution? 2. (25 points) One end of a differential manometer is connected to a vessel in which the gas pressure is 8.50 lbfz’in2 gauge. The other end is open to the atmosphere. If the manometer fluid is mercury (8.6. = 13.6),‘What is the difference in the height of the Hg in the two legs of the manometer? (25 points) A liquid mixture of water (p— — I. Dong/11111) and ethanol (p— = 0. ”1’90 g/rnL) has a density of 0 9?"? g/mL Assuming additivity of volumes ,'what 15 the mass % water in the mixture? (25 points)4 A mixture of CgHfi and air which is 20 O moi % CZHfi flows at a rate of 1.4751110 moles per minute. If this stream is to be diluted with air to iower the CgHg concentration to 4.00 mole %, what molar flow rate of diluting air is required? Mt? Equiwm' Values Mass [kg m moog =. 0.001 merits ton in 2.2'104621t11.J1 r— 3527392 oz 1 Ihm = 15 ox = 5 x 10"1on_m 453.593 g = 0.453593 kg length 1111 = 100cm = 1000111131 = 10" min-011's {9.111) .= 1010 angstroms (A) = 3937111. = 3.2311811 = 1.11935 yd = {1.0005214111iie If: 2 121:1.=1_,f3yd = 9.3043111 = 39.48am 1 I Volume 1m3w1000L=Iflécm3m106mL = 353143115 = 220.33 imperial gaiions = 254.17 gai : 1056.68q1. . 1513 = 172811313 f 7.4305 gal = 0.1123317 me = 23317 L = 211.317 2111’ t Force 1N =ikg-imsz=10‘dynesw105g-emlszw0224811bf 11!): = 32.174155- {1.35 = 4443M = 4.4482x105 dynes - Pressure 1 mm = 1.01325 x 1115 Mm (Pa) = 191.325 kPa = 1.01325 bar 1: 1.01323 ->< 10‘- ammz = 1613 mm Hg at 91c (ton-j : 113.333 to H20 at 4%: = 14.6961bgfm? (psi) : 33.9 f: 1120 a1 4°C u 29.921111, Hg at 0°C ...
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