Question 1

For an endothermic reaction, the energy barrier is ______________ on the reactant side than on the product side.

Accepted Answer

A)  greater 
B)  not different in size 
C)  smaller 
A)  greater 
B)  not different in size 
C)  smaller

Question 2

Write the balanced chemical equation for the complete combustion of pentane, C5H12.

Accepted Answer

C<sub>5</sub>H<sub>1

Question 3

Which scientist first postulated the existence of ions?

Accepted Answer

A)  Lewis 
B)  Dalton 
C)  Arrhenius 
D)  Berzelius 
A)  Lewis 
B)  Dalton 
C)  Arrhenius 
D)  Berzelius

Question 4

How many atoms of oxygen are in 1.00 mol of sulfur dioxide, SO2?

Accepted Answer

A)  64.1 
B)  64.1 × 6.02 × 1023 
C)  12.0 × 1023 
D)  6.02 × 1023 
A)  64.1 
B)  64.1 × 6.02 × 1023 
C)  12.0 × 1023 
D)  6.02 × 1023

Question 5

When the equation NH4NO3→ N2O + H2O is balanced, the coefficient of H2O is

Accepted Answer

A)  3. 
B)  4. 
C)  2. 
D)  1. 
A)  3. 
B)  4. 
C)  2. 
D)  1.

Question 6

The formula for the hydronium ion is ______________.

Accepted Answer

The answer of The formula for the hydronium ion is...

Question 7

For an exothermic reaction, the energy barrier is ______________ on the reactant side than on the product side.

Accepted Answer

A)  smaller 
B)  not different in size 
C)  greater 
A)  smaller 
B)  not different in size 
C)  greater

Question 8

When the equation NH4NO3→ N2O + H2O is balanced, the total of all the coefficients (both written and "understood") is

Accepted Answer

A)  3. 
B)  4. 
C)  7. 
D)  8. 
A)  3. 
B)  4. 
C)  7. 
D)  8.

Question 9

Balance the chemical equation: NO2 + H2O → HNO3 + NO

Accepted Answer

3NO₂ + H<

Question 10

Which of the following is a strong acid?

Accepted Answer

A)  Citric acid 
B)  Nitric acid 
C)  Phosphoric acid 
D)  Acetic acid 
A)  Citric acid 
B)  Nitric acid 
C)  Phosphoric acid 
D)  Acetic acid

For an endothermic reaction, the energy barrier is ______________ on the reactant side than on the product side.

Write the balanced chemical equation for the complete combustion of pentane, C₅H₁₂.

Which scientist first postulated the existence of ions?

How many atoms of oxygen are in 1.00 mol of sulfur dioxide, SO₂?

When the equation NH₄NO₃→ N₂O + H₂O is balanced, the coefficient of H₂O is

The formula for the hydronium ion is ______________.

For an exothermic reaction, the energy barrier is ______________ on the reactant side than on the product side.

When the equation NH₄NO₃→ N₂O + H₂O is balanced, the total of all the coefficients (both written and "understood") is

Balance the chemical equation: NO₂ + H₂O → HNO₃ + NO

Which of the following is a strong acid?

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Exam 13: Chemical Reactions

For an endothermic reaction, the energy barrier is ______________ on the reactant side than on the product side.

Write the balanced chemical equation for the complete combustion of pentane, C5H12.

Which scientist first postulated the existence of ions?

How many atoms of oxygen are in 1.00 mol of sulfur dioxide, SO2?

When the equation NH4NO3→ N2O + H2O is balanced, the coefficient of H2O is

The formula for the hydronium ion is ______________.

For an exothermic reaction, the energy barrier is ______________ on the reactant side than on the product side.

When the equation NH4NO3→ N2O + H2O is balanced, the total of all the coefficients (both written and "understood") is

Balance the chemical equation: NO2 + H2O → HNO3 + NO

Which of the following is a strong acid?

Measurement

Motion

Force and Motion

Work and Energy

Temperature and Heat

Waves and Sound

Optics and Wave Effects

Electricity and Magnetism

Atomic Physics

Nuclear Physics

The Chemical Elements

Chemical Bonding

Organic Chemistry

Place and Time

The Solar System

Moons and Small Solar System Bodies

The Universe

The Atmosphere

Atmospheric Effects

Structural G Eology and P Late Tectonics

Minerals, Rocks, and Volcanoes

Surface Processes

Geologic Time

Filters

Write the balanced chemical equation for the complete combustion of pentane, C₅H₁₂.

How many atoms of oxygen are in 1.00 mol of sulfur dioxide, SO₂?

When the equation NH₄NO₃→ N₂O + H₂O is balanced, the coefficient of H₂O is

When the equation NH₄NO₃→ N₂O + H₂O is balanced, the total of all the coefficients (both written and "understood") is

Balance the chemical equation: NO₂ + H₂O → HNO₃ + NO