Question

which charge below will not depolarize the membrane if it moves in the cell

Verizon LTE 5:01 PM GCII_1_s19.hwk.doc substances for lowest to highest viscosity: NH,NH2 H2S HF 2.(8pts) Identify the types of interparticle forces that are present in each of the following and indicate which is most likely the strongest force in each case (a) XeF4 (b) NH2I(c) CH2CI2 (d) CsCI 3.(4 pts) Classify each of the following solids as either ionic, metallic, molecular, or covalent. (a) C(diamond) (b) Co CIBr (d) CaCl2 4.(12pts) Decane (C10H24 has a vapor pressure of 10.0 torr at 55.7°C, and 400.0 torr at 150.6°C Calculate the heat of vaporization, ΔΗ'ap, of decane. What is the vapor pressure in torr of this substance at 90.0 °C? General Chemistry II Homework assignment #1 (continued) 5.(20pts) (a) (16pts) Complete the following table. All Open With Print

Answer 1

2. a. The F is more electronegative than the Xe so that, 4 dipoles are formed. These dipoles can cancel each other so that, the molecule is nonpolar. The nonpolar molecules are united by dispersion forces.

The N is more electronegative than the I. The N can attract electrons to itself so that, one dipole is formed so that, the molecule is polar. The polar molecules are united by dipole-dipole forces. Also, the N that is a very electronegative atom is united to

hydrogen atoms so that, this molecule can also form hydrogen bonds. The hydrogen bonds are stronger than the dipole-dipole forces. C. Ct e l cl 서- The Cl is more electronegative than the C so that, 2 dipoles are formed. These dipoles cannot cancel each other so that, the molecule is polar. The polar molecules are united by dipole dipole forces.

d. CsCl2 The Cs is a metal while the Cl is a nonmetal. The Cs gives electrons to the Cl to form ionic bonds. 2. a. The C (diamante) is a covalent solid because the atoms are contained in networks. b. The Co is a metallic solid because it is formed for metallic atoms c. The ClBx is a molecular solid because it is formed for molecules that are united by covalent bond. d. The CaCl2 is an ionic solid because it is formed by ions

T2 Ti PF vapor pressure at T2= 400.0 torr Pi= vapor pressure at T1= 10.0 torr AH vaporization enthalpy vap R- ideal gas contat 8.314x 103 kJK mol T2- temperature 2-150.6°C+273-423.6 K T1= temperature l=55.7°C+ 273-328.7 K 4 3 2

400.0 tor 110.0 torr ΔΗ. vap Ln 8.314 x 10- K mol 423.6 K 328.7 K vap RT K mol (-6.82 x 10-4 8.314 x 10-3 / vap 8.314 x 10-3/ k χ (6.82x 10-4 K mol mol kJ Ln40 0.0820 -ΔΗνα p Ln40 0.08202 ΔΗνο 0.0820mol 44.99--= ΔΗ mol

vap T2 T1 P2= vapor pressure at T2 Pi= vapor pressure at T1= 10.0 torr AHyap vaporization enthalpy 44.99 kJ/mol R= ideal gas constant= 8.314 x 10-3 kJ/K mol T2= temperature 2=90°C+ 273-363 K TI-temperature 1 55.7°C + 273 328.7 K kI Ln10.Otorr =8.3144199그 100torr = 44409 -x(363K-3281R) x(-287 x 10-1 10.0 torr 8.314 x 10 K mo mo 363 K 328.7 K kI 10.0 torr 8.314 x 10 K mol

P2 10.0 torr Ln = 1.56 10.0 torr P, = 10.0 torr xe 1.56 2 47.59 torr