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# 3-2 - Wall” Version 103 ~ Exam 3 35 ‘7 Lu ”L0 1 for...

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Unformatted text preview: Wall” . Version 103 ~ Exam 3 35% ‘7 Lu ”L0 1? for the gases 002, CHgCN, Ne, and CH4 but NOT the correspondence of the values to the compounds. What a. value shoud be assigned to 002? (a) 1. 0.2107 LQ-atm/mol g ' 2. 17.58 L2 - atm/mol @3392 L2 - atm/mol 4. Unable t0<letermine 5. 2.253 L2 - atm/mol 006 10.0 points If 250 mL of a gas at STP weighs 2 g, what is the molar mass of the gas? : ‘ "l3 L _ k @1535 1. 28.0 mol—1 (75 in; g . 21 . Ga: lain .2. ml ,_ —1 W 2. 8.00% mol “:7 iﬁ‘ag (3.179g-mol’1 ll: VOKLOC ‘ w- 7 4. 44.8 g -molT1 l" 177) lull—:1 9“ Mel 5. 56.0 g . mol—L 007 10.0 points Calculate the amount of oxygen gas collected by the displacement of water at 14°C if the atmospheric pressure is 790 Torr and the vol— ume is 5 L. The vapor pressure of water at 14°C is 12 Torr. , Z 7725 F1 — "lie _ S 1.4.46mol ins ”All 2. 0.217 mol — McCord * (53740) 2 total pressure in the bulb if the temperature is 345°C and the volume is 0.0 mL? {4’ 1.12,030atm 10 Q 753 m “3;? 7'. 6 "‘1 '2 7'? 4'. @ 193 atm X 3. There is no pressure because the metal bulb exerts more force than the gas does. n RT 4. 107 atm : 4"“ @1450 atm . ”Cl 6. 12.1 atm 7. 0.107 atm (ill; 009 10.0 points The same number of grams 0% and 02 are placed in separate bulbs of equal vol- ume and temperature under conditions when both gases behave ideally. Which statement is true? 1. The pressures in the two bulbs are the {i . .111 . I .M mm as e 3 Total smépgfi 00° Al 2. The b b containing 02 contains more molecule of gas. @ The pressure in the NH3 bulb is greater than the pressure in the 02 bulb. , 4. The pressure in the 02 bulb is greater than the pressure in the N H3 bulb. moles of s. 5. BotthxJ/lbs contain the same number of 1 l- « ’7 ”I 0 _ 11 A: (“3'33 010 10.0 points 3 018411101 __ 01.. X j ’5 3" Based on the types and strengths of in» ill/lea; w “l s. termolecular forces present. place the corn— 4. 0.224 mol l Vlm ‘ 1?? 5‘0“} pounds \I 3?) . 7if30-m a M 5 5. 0.00335 mol S CGH143 Csﬁs, C5H110H, C5H1101, CaBrg 008 10'0 points in order from lowest to highest boiling point A metal bulb is ﬁlled with 10.2 g of CHCl3 ll? 5* and 1.67 g of CH4 (two gases). What is the :Qowest on the left, highest on the right). ...
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