Question 1

A 6.55 × 10 − 3 M solution of Cd(NO3)2 can be made by dissolving ____ grams of the salt in sufficient water to make 500 mL of the solution.

Accepted Answer

A)  0.991 
B)  1.549 
C)  0.585 
D)  0.774 
A)  0.991 
B)  1.549 
C)  0.585 
D)  0.774

Question 2

How many helium atoms are present in 3.0 × 10 −2  moles of the gas?

Accepted Answer

A)  5.6 × 1021 
B)  1.8 × 1022 
C)  4.5 × 1021 
D)  1.2 × 10 − 26 
A)  5.6 × 1021 
B)  1.8 × 1022 
C)  4.5 × 1021 
D)  1.2 × 10 − 26

Question 3

Spectator ions do not participate in a chemical reaction.

Accepted Answer

A) True 
 B)False

Question 4

A 118.63 g of SrCl2 ∙ 6H2O contains ____ molecules of strontium nitrate

Accepted Answer

A)  2.680 × 1023 
B)  1.346 × 1024 
C)  5.540 × 1023 
D)  6.224 × 10 − 24 
A)  2.680 × 1023 
B)  1.346 × 1024 
C)  5.540 × 1023 
D)  6.224 × 10 − 24

Question 5

In the aqueous phase reaction between KCl and AgNO3, the following statement is true:

Accepted Answer

A)  1.0 mole of KCl and 2.0 moles of AgNO3 react without excess remaining 
B)  Two moles of KCl with excess AgNO3 will form four moles of AgCl 
C)  These two compounds react to form solid AgCl, K1+, and NO31 −  
D)  Chloride is a spectator ion 
A)  1.0 mole of KCl and 2.0 moles of AgNO3 react without excess remaining 
B)  Two moles of KCl with excess AgNO3 will form four moles of AgCl 
C)  These two compounds react to form solid AgCl, K1+, and NO31 −  
D)  Chloride is a spectator ion

A 6.55 × 10^{− 3} M solution of Cd(NO₃)₂ can be made by dissolving ____ grams of the salt in sufficient water to make 500 mL of the solution.

How many helium atoms are present in 3.0 × 10⁻² moles of the gas?

Spectator ions do not participate in a chemical reaction.

A 118.63 g of SrCl₂ ∙ 6H₂O contains ____ molecules of strontium nitrate

In the aqueous phase reaction between KCl and AgNO₃, the following statement is true:

Introduction to Chemistry

Atoms and Molecules

Stoichiometry

Gases

The Periodic Table and Atomic Structure

Chemical Bonding and Molecular Structure

Molecules and Materials

Energy and Chemistry

Entropy and the Second Law of Thermodynamics

Chemical Kinetics

Chemical Equilibrium

Electrochemistry

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Exam 3: Molecules Moles Chemical Equations

A 6.55 × 10 − 3 M solution of Cd(NO3)2 can be made by dissolving ____ grams of the salt in sufficient water to make 500 mL of the solution.

How many helium atoms are present in 3.0 × 10 −2 moles of the gas?

Spectator ions do not participate in a chemical reaction.

A 118.63 g of SrCl2 ∙ 6H2O contains ____ molecules of strontium nitrate

In the aqueous phase reaction between KCl and AgNO3, the following statement is true:

Introduction to Chemistry

Atoms and Molecules

Stoichiometry

Gases

The Periodic Table and Atomic Structure

Chemical Bonding and Molecular Structure

Molecules and Materials

Energy and Chemistry

Entropy and the Second Law of Thermodynamics

Chemical Kinetics

Chemical Equilibrium

Electrochemistry

Filters

A 6.55 × 10^{− 3} M solution of Cd(NO₃)₂ can be made by dissolving ____ grams of the salt in sufficient water to make 500 mL of the solution.

How many helium atoms are present in 3.0 × 10⁻² moles of the gas?

A 118.63 g of SrCl₂ ∙ 6H₂O contains ____ molecules of strontium nitrate

In the aqueous phase reaction between KCl and AgNO₃, the following statement is true: