Author Question: Which of the following exhibits a net dipole moment? a. SO2 b. CO2 c. O2 d. a and b e. a, b, ... (Read 72 times)

melly21297 · **on:** Aug 23, 2018

Which of the following exhibits a net dipole moment?
a. SO2
b. CO2
c. O2
d. a and b
e. a, b, and c

Question 2

Which of the following does not exhibit a net dipole moment of zero?
a. CO2
b. CH4
c. CCl4
d. H2O
e. SO3

Question 3

Elements from the same group
a. have the same number of neutrons.
b. have the same number of valence electrons.
c. usually form the same number of bonds.
d. occur in horizontal rows.
e. b and c

Question 4

Which structure could best illustrate the octet rule?
a. He
b. H2
c. SiH4
d. BH3
e. none of these

Question 5

An element may form an ion
a. that has a noble gas electron configuration.
b. if the charge is small in relation to its volume.
c. if the element is a metal, metalloid, or nonmetal.
d. a, b, and c
e. b and c

Question 6

The noble gases do not readily form chemical bonds because
a. they are gases.
b. they have an even number of protons and electrons.
c. they have a filled outer shell of electrons.
d. their electrons do not allow bonding with other elements.
e. none of these

Question 7

Ionic bonding
a. occurs when metals are combined with non metals.
b. involves a sharing of electrons between metal and non metal.
c. occurs when crystals form.
d. occurs when the inner core electrons of the metal are transferred to the non metal.
e. none of these

Question 8

Covalent bonding
a. involves a transfer of electrons from one atom to another.
b. occurs when atoms share all their valence electrons.
c. occurs when unpaired valence electrons are shared between atoms.
d. usually produces very polar compounds.
e. none of these

Question 9

Which compound contains ionic bonds?
a. NI3
b. CH3COCl
c. NaHCO3
d. NH3
e. SiO2

Question 10

Which compound(s) is (are) ionic?
a. BF3
b. NaNH2
c. Li2CO3
d. a and b
e. b and c

Question 11

The dots in Lewis structures represent
a. all electrons.
b. valence electrons.
c. the number of protons.
d. the charge.
e. none of the above

Question 12

All atoms of a given element have the same
a. number of electrons.
b. number of neutrons.
c. number of protons.
d. mass.
e. number of protons and electrons.

Question 13

Valence electrons refer to those
a. in the nearest shell.
b. which are negative.
c. of lowest energy.
d. in the outermost shell.
e. that are electronegative.

Question 14

The electrons are located
a. in the nucleus.
b. in orbitals.
c. in perfectly circular orbits.
d. in and around the nucleus.
e. in nodes.

Question 15

The atomic nucleus
a. is positively charged.
b. has no charge (neutral) because of the neutrons.
c. is neutral because of the electrons.
d. is negatively charged.
e. none of the above

Question 16

The nucleus of an atom consists of
a. protons.
b. protons and neutrons.
c. electrons, proton, and neutrons.
d. protons and electrons.
e. neutrons and electrons.

Question 17

The basic chemical building block is the
a. proton.
b. ion.
c. atom.
d. electron.
e. neutron.

Question 18

Modern organic chemistry
a. is the study of carbon-containing compounds.
b. is the study of compounds from living organisms.
c. deals exclusively with chemicals that are obtainable from natural sources.
d. a, b, and c
e. a and c

Question 19

A compound with the formula C5H7NO2 has these peaks in its IR spectrum: 3000-2850 cm1; 2250 cm1;
1740 cm1 (intense), and 1200 cm1 (intense). Explain which functional group is present in this compound and
show a possible structure for it.

Question 20

A compound with the formula C4H10O has these peaks in its IR spectrum: 3300 cm1 (broad); 3000-
2850 cm1; 1050 cm1(intense). Explain which functional group is present in this compound and show a
possible structure for it.

Question 21

How would you use infrared spectroscopy to distinguish 1-propanol and propanoic acid?

ky860224 · **Reply #1 on:** Aug 23, 2018

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Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.

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