# Section C Review Pg.153-179

37 Questions | Total Attempts: 67  Settings  Review of Section C Law of Conservation of Matter.

Related Topics
• 1.
What is the molar mass of Carbon?
• A.

6 g/mol

• B.

12.01 g/mol

• C.

19.00 g/mol

• D.

1.01 g/mol

• 2.
What is the molar mass of CH4 (methane)?
• A.

12.01 g/mol

• B.

13.02 g/mol

• C.

16.05 g/mol

• D.

32.10 g/mol

• 3.
What is the molar mass of (NH4)2CO3 (Ammonium carbonate)?
• A.

96.11 g/mol

• B.

82.10 g/mol

• C.

106.11 g/mol

• D.

43.01 g/mol

• 4.
What is the molecular mass of Cu3(PO4)2?
• A.

253.49 g/mol

• B.

380.59 g/mol

• C.

110.22 g/mol

• D.

348.59 g/mol

• 5.
What is the molecular mass of Aluminum nitrate Al(NO3)3 from this equation: 2Al(s)   + 3Fe(NO3)2(aq)   à 3Fe(s)  + 2Al(NO3)3(aq)
• A.

213.01 g/mol

• B.

335.98 g/mol

• C.

56.99 g/mol

• D.

141.01 g/mol

• 6.
What coefficients will balance the following equation H2 + O2 --->  H2O
• A.

2,2,1

• B.

2,1,2

• C.

4,1,2

• D.

2,2,2

• 7.
What coefficients will balance the following equation Al  + O2  --> Al2O3
• A.

1,3,2

• B.

4,3,2

• C.

2,2,2

• D.

2,1,3

• 8.
What coefficients will balance the following equation AgNO3  +  NaCl  ---->  AgCl   +   NaNO
• A.

2,2,2,1

• B.

1,1,1,1

• C.

1,2,1,2

• D.

2,1,2,1

• 9.
What coefficients will balance the following equation K   +   H2O ----->    KOH   +   H
• A.

1,1,1,1

• B.

2,2,2,1

• C.

2,1,2,1

• D.

1,2,1,2

• 10.
What coefficients will balance the following equation Hg  +  O2  ---->  HgO
• A.

1,1,1

• B.

2,2,1

• C.

2,1,2

• D.

1,2,2

• 11.
A balanced chemical equation shows the proportions of reactants and products necessary for
• A.

The reaction to occur

• B.

Mass to be conserved.

• C.

Energy use to be minimized.

• D.

Electrolysis to occur.

• 12.
A chemical equation is balanced by changing or adding
• A.

Chemical symbols

• B.

Subscripts

• C.

Coefficients

• D.

Reactants

• 13.
What happens in a chemical reaction?
• A.

Atoms are destroyed

• B.

Atoms are created

• C.

Atoms are rearranged

• D.

Atoms are heated or cooled

• 14.
A substance that undergoes a change in a chemical reaction is
• A.

A product

• B.

A chemical

• C.

A reactant

• D.

An enzyme

• 15.
What are the percent composition for SF2?
• A.

55 % Sulfur and 45% Fluorine

• B.

45.76% Sulfur and 54.39 % Fluorine

• C.

33% Sulfur and 67% Fluorine

• D.

49.2 % Sulfur and 50.8 % Fluorine

• 16.
What is the percent composition of Ethyne? C2H2?
• A.

92.31% Carbon and 7.76% Hydrogen

• B.

82% Carbon and 18% Hydrogen

• C.

82.7% Carbon and 17.3 % Hydrogen

• D.

90% Carbon and 14 % Hydrogen

• 17.
What is the percentage of Sulfur in SF2?
• A.

32.06 % Sulfur

• B.

25% Sulfur

• C.

45.15 % Sulfur

• D.

62.67 % Sulfur

• 18.
What is the empirical formula for a compound that contains 1.67 mole Carbon and 5.01 Moles of Hydrogen
• A.

CH

• B.

CH2

• C.

C2H3

• D.

CH3

• 19.
What is the empirical formula for a compound that contains 37.69% Na and 62.31 % Fluorine?
• A.

NaF3

• B.

Na2F

• C.

NaF

• D.

NaF2

• 20.
What is the empirical formula for: 85.60% C and 14.40% H?
• A.

C2H3

• B.

CH2

• C.

CH3

• D.

C2H4

• 21.
What does the Law of Conservation of Matter refer to?
• A.

Matter can not be created or destroyed.

• B.

Matter can be created but can not be destroyed.

• C.

Matter can be destroyed but not created.

• 22.
What is Matter?
• 23.
What side of the equation are the reactants on?
• A.

Right

• B.

Left

• C.

Middle

• D.

Both.

• 24.
What are the reactants in the following equation? H2 + O → H2
• A.

Hydrogen

• B.

Oxygen

• C.

Water

• D.

Hydrogen and Oxygen

• 25.
How many atoms of N are in the following molecule? NH3
• A.

1

• B.

2

• C.

3

• D.

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