**Unformatted text preview: **' C101 Fall 2010: Quiz 3 Using a #2 pencil, darken the balloon on the answer sheet corresponding to the best answer.
P,V,/T, = P: Vz/Tz PV 2 rzRT R 2 0.0821 L ntmﬁmo! K 3’ elm = 760 tons
CH30H: heat of fusion 23.? cal/g heat of vaporization 37.4 calfg q = mCA’l‘ Cmcthmoy = 0.609 cal/g°C L/
71. A sample of gas trapped in a syringe has a pressure of 400florr when the volume is 250 ml... What is the {igltaple if the pressure is 5005211? Ru: 5. Pal/L V2.3— w%{t, :2 gmxifimg
®2tmmr b. 31.3mL e. 50.01nL d. 10.0 mL e. 12.5 mL ' “gaming“
72. What is the ggiurc when a 4.0 {dole sample of N2 gas has a volume of 163.1. and the
temperature is 40pm W: n m. P”; ﬁg}_ 3 Lsﬁjgwsn. :2 0 {gym a. 1.22 arm b. 89.6 atm c. 10.0 ann a: 0.821 atm e. 210.13.01.51?!” 7?). Which gas has signiﬁcant dipole—dipole forces acting between the molecules? ill 0 (‘45ng
etc) 51;? gauze/r” he?!" o/M M Wis bale?” E
a. c "‘4 b. 3’02 __- :C:O d. CH3 “H; e. 1:“5H;“""”4%;3 page». I?
. H’ 74. Methanol, CH3OH, melts at —98°C. How much heat must be removed to completely-Mirmeg’éme
15.0 g of methanol that is at its meltingwpoint? Note: There is some “potential? uswe‘ful u.....~a..c.mv«wm.,.w ”MW“ Kn {4,53, May; Mﬂ ﬁrxtkn 14"?” “Virg- information” at the top of the page. a. 56 cal ‘ 49%
a“ falmlﬂ- 0mm 0M "tame! wag/Jae! .E? 4.
b 561 cal { tic/9 .5
c. 895 cal C/ 5‘ 0 _ . P Q
: 2.32741344/6 >$ 8’ ggf“; (fa
d. 34.8 keal ﬁat a»? x .
c. 55.0 kcal
75. How many grams of ammonium carbonate are needed to make 400. mL of a 2.00%(WIV) aqueous ammonium carbonate solution?
a. 0.50 g b. 2.0 g c. 4.0 g d. 5.0 g . Mﬂmé Elwin 76. Suppose that 0.40 moles of calcium nitrate are placed in a ﬂask and water is added until the
volume is 500 mL. What is the concentration of the resulting solution? a. 0.20M ME/M’Jéi s.- Mo/ ﬁajmﬁe. mm mm“? b. 0.40 M -' it...§azu.7lfm. c. 1.0 M O'WW/ .3 0!? ma] 63:2 m
e. 1.6M {3,530.9 t... .1... ...

View
Full Document

- Spring '10
- Rhoads
- Physics