Laser_3

A balanced equation has the same numbers and kinds of ________ on both sides of the reaction arrow.

A balanced equation has the same numbers and kinds of ________ on both sides of the reaction arrow.

A balanced equation has the same numbers and kinds of ________ on both sides of the reaction arrow.

Whelan   203   1 Reply

hbutler2

When the reaction C4H10 + O2 → CO2 + H2O is balanced using the smallest whole number coefficients, t

When the reaction C4H10 + O2 → CO2 + H2O is balanced using the smallest whole number coefficients, t

When the reaction C4H10 + O2 → CO2 + H2O is balanced using the smallest whole number coefficients, the coefficient in front of O2 is ________.

Whelan   266   1 Reply

hbutler2

When the reaction C3H8 + O2 → CO2 + H2O is balanced, the total number of oxygen atoms in the balance

When the reaction C3H8 + O2 → CO2 + H2O is balanced, the total number of oxygen atoms in the balance

When the reaction C3H8 + O2 → CO2 + H2O is balanced, the total number of oxygen atoms in the balanced equation is ________.

Whelan   163   1 Reply

hbutler2

The fundamental SI unit for measuring matter is the ________.

The fundamental SI unit for measuring matter is the ________.

The fundamental SI unit for measuring matter is the ________.

Whelan   160   1 Reply

hbutler2

How many moles are in 7.8 g of acetamide, CH3CONH2?

How many moles are in 7.8 g of acetamide, CH3CONH2?

How many moles are in 7.8 g of acetamide, CH3CONH2?

Whelan   748   1 Reply

hbutler2

The balanced equation for the gaseous state oxidation of ammonia is shown below.4 NH3 + 5 O2 → 4 NO

The balanced equation for the gaseous state oxidation of ammonia is shown below.4 NH3 + 5 O2 → 4 NO

The balanced equation for the gaseous state oxidation of ammonia is shown below.

4 NH3 + 5 O2 → 4 NO + 6 H2O

How many moles of O2 are required to react with 1.2 mole of NH3?

Whelan   418   1 Reply

hbutler2

The balanced equation for the reaction of acetylene, C2H2, and oxygen in an acetylene torch is 2 C2H

The balanced equation for the reaction of acetylene, C2H2, and oxygen in an acetylene torch is 2 C2H

The balanced equation for the reaction of acetylene, C2H2, and oxygen in an acetylene torch is

2 C2H2 + 5 O2 → 4 CO2 + 2 H2O.

In this reaction the number of grams of oxygen required to react with 0.13 g of acetylene is ________

Whelan   451   1 Reply

hbutler2

Ozone is unstable, decomposing to oxygen, as shown in the balanced equation 2 O3 → 3 O2.In this reac

Ozone is unstable, decomposing to oxygen, as shown in the balanced equation 2 O3 → 3 O2.In this reac

Ozone is unstable, decomposing to oxygen, as shown in the balanced equation

2 O3 → 3 O2.

In this reaction, how many grams of oxygen can be formed from the decomposition of 96 grams of ozone?

Whelan   697   1 Reply

hbutler2

Ozone reacts with iodide ion as shown in the balanced equation below.O3 + 2 I- + H2O → O2 + I2 + 2 O

Ozone reacts with iodide ion as shown in the balanced equation below.O3 + 2 I- + H2O → O2 + I2 + 2 O

Ozone reacts with iodide ion as shown in the balanced equation below.

O3 + 2 I- + H2O → O2 + I2 + 2 OH-

In this reaction, how many grams of oxygen can be formed from the reaction of 126 grams of ozone?

Whelan   351   1 Reply

hbutler2

Tablets of ascorbic acid, or Vitamin C, C6H8O6, are taken as a dietary supplement. If a typical tab

Tablets of ascorbic acid, or Vitamin C, C6H8O6, are taken as a dietary supplement. If a typical tab

Tablets of ascorbic acid, or Vitamin C, C6H8O6, are taken as a dietary supplement.  If a typical tablet contains 500 mg, how many atoms of carbon (C) are in a tablet?

Whelan   180   1 Reply

hbutler2

The balanced equation for the decomposition of water is shown below.2 H2O → 2 H2 + O2If 0.72 g of wa

The balanced equation for the decomposition of water is shown below.2 H2O → 2 H2 + O2If 0.72 g of wa

The balanced equation for the decomposition of water is shown below.

2 H2O → 2 H2 + O2

If 0.72 g of water react completely in this reaction, what is the theoretical yield of H2?

Whelan   855   1 Reply

hbutler2

Oxygen can be produced from the catalytic decomposition of KClO3 as shown in the balanced equation b

Oxygen can be produced from the catalytic decomposition of KClO3 as shown in the balanced equation b

Oxygen can be produced from the catalytic decomposition of KClO3 as shown in the balanced equation below.

2 KClO3 → 2 KCl + 3 O2

What is the percent yield if 3.20 grams of oxygen are formed from the reaction of 12.3 grams of KC

Whelan   873   1 Reply

hbutler2

Which of the following represents the change in electronic configuration that is associated with the

Which of the following represents the change in electronic configuration that is associated with the

Which of the following represents the change in electronic configuration that is associated with the second ionization energy of magnesium?
A) [Ne]3s2 → [Ne]3s1 + e-
B) [Ne]3s2 → [Ne] + 2 e-
C) [Ne]3s1 → [Ne] + e-
D) [Ne]3s2 + e-

Whelan   246   1 Reply

hbutler2

Consider the following electron configurations for neutral atoms:atom I = 1s22s22p63s2atom II = 1s22

Consider the following electron configurations for neutral atoms:atom I = 1s22s22p63s2atom II = 1s22

Consider the following electron configurations for neutral atoms:

   atom I = 1s22s22p63s2
   atom II = 1s22s22p63s23p4
   atom III = 1s22s22p63s23p6

Which atom would be expected to have the largest third ionization energy?

Whelan   885   1 Reply

hbutler2

Which electron affinity process would liberate the most energy?

Which electron affinity process would liberate the most energy?

Which electron affinity process would liberate the most energy?
A) [He] 2s2 + e- → [He] 2s2 2p1
B) [He] 2s2 2p2 + e- → [He] 2s2 2p3
C) [He] 2s2 2p3 + e- → [He] 2s2 2p4
D) [He] 2s2 2p6 + e- → [He] 2s2 2p6 3s1

Whelan   887   1 Reply

hbutler2

Which element has the most favorable (most negative) electron affinity?

Which element has the most favorable (most negative) electron affinity?

Which element has the most favorable (most negative) electron affinity?
A) K
B) Be
C) I
D) Ne

Whelan   365   1 Reply

hbutler2

Which of these elements has the most favorable (most negative) electron affinity?

Which of these elements has the most favorable (most negative) electron affinity?

Which of these elements has the most favorable (most negative) electron affinity?
A) Ca
B) N
C) Ne
D) S

Whelan   258   1 Reply

hbutler2

What is the general trend in ionization energy and electron affinity values?

What is the general trend in ionization energy and electron affinity values?

What is the general trend in ionization energy and electron affinity values?
A) Both decrease as one traverses a period from left to right and both decrease as one descends a group.
B) Both decrease as one traverses a period from left to ri

Whelan   356   1 Reply

hbutler2

Calculate the lattice energy for NaCl(s) using a Born-Haber cycle and the following information:NaCl

Calculate the lattice energy for NaCl(s) using a Born-Haber cycle and the following information:NaCl

Calculate the lattice energy for NaCl(s) using a Born-Haber cycle and the following information:

   NaCl(s) → Na+(g) + Cl-(g)   ?
   Na(s) + 1/2 Cl2(g) → NaCl(s)   -411.0 kJ/mol
   Na(s) → Na(g)   +107.3 kJ/mol
   Na(g) → Na+(g) + e-   +495

Whelan   328   1 Reply

hbutler2

Calculate the lattice energy for MgCl2(s) using a Born-Haber cycle and the following information:MgC

Calculate the lattice energy for MgCl2(s) using a Born-Haber cycle and the following information:MgC

Calculate the lattice energy for MgCl2(s) using a Born-Haber cycle and the following information:

   MgCl2(s) → Mg2+(g) + 2 Cl-(g)   ?
   Mg(s) + Cl2(g) → MgCl2(s)   -641.6 kJ/mol
   Mg(s) → Mg(g)   +147.1 kJ/mol
   Mg(g) → Mg+(g) + e-   +7

Whelan   1612   1 Reply

hbutler2

Calculate the lattice energy for MgO(s) using a Born-Haber cycle and the following information:MgO(s

Calculate the lattice energy for MgO(s) using a Born-Haber cycle and the following information:MgO(s

Calculate the lattice energy for MgO(s) using a Born-Haber cycle and the following information:

   MgO(s) → Mg2+(g) + O2-(g)   ?
   Mg(s) → Mg(g)   +147.1 kJ/mol
   Mg(g) → Mg+(g) + e-   +737.8 kJ/mol
   Mg+(g) → Mg2+(g) + e-   +1451 kJ/mol

Whelan   416   1 Reply

hbutler2

Calculate the energy change in kJ/mol for the reaction using the following information:Li(g) → Li+

Calculate the energy change in kJ/mol for the reaction using the following information:Li(g) → Li+

Calculate the energy change in kJ/mol for the reaction   using the following information:

   Li(g) → Li+(g) + e-   +520 kJ/mol
   F(g) + e- → F-(g)   -328 kJ/mol

A) -848 kJ/mol
B) -192 kJ/mol
C) +192 kJ/mol
D) +

Whelan   459   1 Reply

hbutler2

Which sphere most likely represents the Ca2+ ion?

Which sphere most likely represents the Ca2+ ion?

Which sphere most likely represents the Ca2+ ion?
A) A
B) B
C) A or B
D) C or D

Whelan   129   1 Reply

hbutler2

Which sphere most likely represents the Cl⁻ ion?

Which sphere most likely represents the Cl⁻ ion?

Which sphere most likely represents the Cl⁻ ion?
A) A
B) B
C) A or B
D) C or D

Whelan   144   1 Reply

hbutler2

Which sphere most likely represents the S2- ion?

Which sphere most likely represents the S2- ion?

Which sphere most likely represents the S2- ion?
A) A
B) B
C) A or B
D) C or D

Whelan   199   1 Reply

hbutler2

Which contains ionic bonds? (Multiple Choice)

Which contains ionic bonds? (Multiple Choice)

Which contains ionic bonds?
A) CH4
B) CaCl2
C) Cl2
D) NCl3

Whelan   120   1 Reply

hbutler2

Which contains covalent bonds? (Multiple Choice)

Which contains covalent bonds? (Multiple Choice)

Which contains covalent bonds?
A) LiOO
B) NH3
C) LiCl
D) CaI2

Whelan   138   1 Reply

hbutler2

Which contains both covalent bonds and ionic bonds?

Which contains both covalent bonds and ionic bonds?

Which contains both covalent bonds and ionic bonds?
A) HBr
B) LiI
C) NH3
D) NH4Cl

Whelan   375   1 Reply

hbutler2

How many electrons are in the outermost shell of the K+ ion in its ground state?

How many electrons are in the outermost shell of the K+ ion in its ground state?

How many electrons are in the outermost shell of the K+ ion in its ground state?
A) 0
B) 2
C) 6
D) 8

Whelan   441   1 Reply

hbutler2

Which two ions have the same electron configuration in the ground state?

Which two ions have the same electron configuration in the ground state?

Which two ions have the same electron configuration in the ground state?
A) Cs+ and Li+
B) Ca2+ and Cl-
C) Se2+ and Cl-
D) Fe2+ and Fe3+

Whelan   429   1 Reply

hbutler2

Give the electronic configuration for Mn2+.

Give the electronic configuration for Mn2+.

Give the electronic configuration for Mn2+.
A) [Ar]2s22p63d5
B) [Ar]4s23d3
C) [Ar]4s13d4
D) [Ar]3d5

Whelan   203   1 Reply

hbutler2

Indicate which is larger in each of the following two sets.(I) Cr2+ or Cr (II)N2- or NA) Cr2+ is lar

Indicate which is larger in each of the following two sets.(I) Cr2+ or Cr (II)N2- or NA) Cr2+ is lar

Indicate which is larger in each of the following two sets.

   (I) Cr2+ or Cr    (II)N2- or N

A) Cr2+ is larger than Cr and N3- is larger than N.
B) Cr2+ is larger than Cr and N is larger than N3-.
C) Cr is larger than Cr2

Whelan   201   1 Reply

hbutler2

Of the following, which element has the highest first ionization energy?

Of the following, which element has the highest first ionization energy?

Of the following, which element has the highest first ionization energy?
A) barium
B) cesium
C) indium
D) rubidium

Whelan   157   1 Reply

hbutler2

Of the following, which element has the highest first ionization energy?

Of the following, which element has the highest first ionization energy?

Of the following, which element has the highest first ionization energy?
A) indium
B) rubidium
C) tin
D) strontium

Whelan   302   1 Reply

hbutler2

Of the following, which element has the highest first ionization energy?

Of the following, which element has the highest first ionization energy?

Of the following, which element has the highest first ionization energy?
A) Ra
B) Fr
C) K
D) Sr

Whelan   142   1 Reply

hbutler2

Of the following, which element has the highest first ionization energy?

Of the following, which element has the highest first ionization energy?

Of the following, which element has the highest first ionization energy?
A) Ba
B) I
C) Rb
D) Po

Whelan   154   1 Reply

hbutler2

Which of the following species will have the highest ionization energy?

Which of the following species will have the highest ionization energy?

Which of the following species will have the highest ionization energy?
A) Na+
B) Na2+
C) Na3+
D) Na4+

Whelan   173   1 Reply

hbutler2

Which of the following represents the change in electronic configuration that is associated with the

Which of the following represents the change in electronic configuration that is associated with the

Which of the following represents the change in electronic configuration that is associated with the first ionization energy of barium?
A) [Xe]6s16p1 → [Xe]6s1 + e-
B) [Xe]6s2 → [Xe]6s16p1
C) [Xe]6s2 → [Xe]6s1 + e-
D) [Xe]6s2 + e-

Whelan   306   1 Reply

hbutler2

Which element has the highest first electron affinity?

Which element has the highest first electron affinity?

Which element has the highest first electron affinity?
A) Fr
B) Ra
C) Po
D) Rn

Whelan   279   1 Reply

hbutler2

Which element has the least favorable (least negative) electron affinity?

Which element has the least favorable (least negative) electron affinity?

Which element has the least favorable (least negative) electron affinity?
A) Cl
B) S
C) Mg
D) As

Whelan   640   1 Reply

hbutler2