Question 1

Any reaction that absorbs 150 kcal of energy can be classified as ________.

Accepted Answer

A) endothermic 
B) exothermic 
C) activated 
D) reduction 
E) oxidation 
A) endothermic 
B) exothermic 
C) activated 
D) reduction 
E) oxidation A

Question 2

In any balanced chemical equation,the number of each type of atom on both sides of the equation is ________.

Accepted Answer

A) doubled 
B) the same 
C) decreased by one 
D) increased by one 
E) dependent on the temperature 
A) doubled 
B) the same 
C) decreased by one 
D) increased by one 
E) dependent on the temperature B

Question 3

A chemical equation is balanced when ________.

Accepted Answer

A) the total number of molecules is the same in reactants and products 
B) the total number of ions is the same in reactants and products 
C) the sum of the coefficients of the reactants is equal to the sum of the coefficients of the products 
D) the number of atoms of each element is the same in reactants and products 
E) the charge on each atom is the same in reactants and products 
A) the total number of molecules is the same in reactants and products 
B) the total number of ions is the same in reactants and products 
C) the sum of the coefficients of the reactants is equal to the sum of the coefficients of the products 
D) the number of atoms of each element is the same in reactants and products 
E) the charge on each atom is the same in reactants and products D

Question 4

What is the molar mass of sucrose (       )?

Accepted Answer

A) 29.02 g/mole 
B) 50.23 g/mole 
C) 210.0 g/mole 
D) 342.3 g/mole 
E) 182.0 g/mole 
A) 29.02 g/mole 
B) 50.23 g/mole 
C) 210.0 g/mole 
D) 342.3 g/mole 
E) 182.0 g/mole

Question 5

For the following question(s),consider the following balanced equation. 
    + 6   O → 3   + 2  
-How many grams of   are produced from 125 g of   and excess   ?
   + 2   →   + 2   O

Accepted Answer

A) 125 g 
B) 62.5 g 
C) 172 g 
D) 85.9 g 
E) 250.g 
A) 125 g 
B) 62.5 g 
C) 172 g 
D) 85.9 g 
E) 250.g

Question 6

For the following reaction,what is the correct coefficient for the   ? 
Fe + HCl → FeC   +

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 7

For the following question(s),consider the following equation.
2Mg +   → 2MgO
-The number of moles of oxygen gas needed to react with 4.0 moles of Mg is ________.

Accepted Answer

A) 1.0 mole 
B) 2.0 moles 
C) 3.0 moles 
D) 4.0 moles 
E) 6.0 moles 
A) 1.0 mole 
B) 2.0 moles 
C) 3.0 moles 
D) 4.0 moles 
E) 6.0 moles

Question 8

Which reactant is oxidized in the following reaction?
Zn + 2HCl → Zn   +

Accepted Answer

The answer of Which reactant is oxidized in the following...

Question 9

In this reaction,what is the correct coefficient for sodium chloride? 
Pb(N     + ? NaCl → PbC   + ? NaN

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 10

Answer the question(s)below about the following reaction.
2     → 2   O +  
-How many grams of water will 100.grams of hydrogen peroxide produce?

Accepted Answer

A) 36.0 g 
B) 360.g 
C) 5.88 g 
D) 53.0 g 
E) 106 g 
A) 36.0 g 
B) 360.g 
C) 5.88 g 
D) 53.0 g 
E) 106 g

Question 11

The molar mass of potassium is ________.

Accepted Answer

A) 19.00 g/mole 
B) 31.00 g/mole 
C) 6.02 ×   g/mole 
D) 39.10 g/mole 
E) 15.02 g/mole 
A) 19.00 g/mole 
B) 31.00 g/mole 
C) 6.02 ×   g/mole 
D) 39.10 g/mole 
E) 15.02 g/mole

Question 12

The following reaction is correctly balanced.
2     + 5   → 4C   +   O

Accepted Answer

A) True 
 B)False

Question 13

3.00 moles of   have a mass of ________.

Accepted Answer

A) 138 g 
B) 46.0 g 
C) 30.0 g 
D) 90.0 g 
E) 45.0 g 
A) 138 g 
B) 46.0 g 
C) 30.0 g 
D) 90.0 g 
E) 45.0 g

Question 14

Calculate the molar mass of magnesium chloride,MgCl2

Accepted Answer

A) 24.31 g/mole 
B) 95.21 g/mole 
C) 125.9 g/mole 
D) 59.76 g/mole 
E) 70.90 g/mole 
A) 24.31 g/mole 
B) 95.21 g/mole 
C) 125.9 g/mole 
D) 59.76 g/mole 
E) 70.90 g/mole

Question 15

For the following question(s),consider the following balanced equation. 
    + 6   O → 3   + 2  
-How many grams of   O are needed to produce 150 g of   ?

Accepted Answer

A) 46 g 
B) 18 g 
C) 130 g 
D) 93 g 
E) 23 g 
A) 46 g 
B) 18 g 
C) 130 g 
D) 93 g 
E) 23 g

Question 16

For the following question(s),consider the following balanced equation. 
    + 6   O → 3   + 2  
-Find the mass of   that is produced when 25.0 grams of     reacts with HCl according to the following equation. 
    + 6HCl → 2   + 3   O

Accepted Answer

A) 155 g 
B) 72.9 g 
C) 65.3 g 
D) 32.6 g 
E) 16.3 g 
A) 155 g 
B) 72.9 g 
C) 65.3 g 
D) 32.6 g 
E) 16.3 g

Question 17

One mole of copper(II)sulfate,CuS   ,contains ________ O atoms.

Accepted Answer

A) 4 
B) 6.02 ×   
C) 1.51 ×   
D) 2.41 × 1023 
E) 2.41 ×   
A) 4 
B) 6.02 ×   
C) 1.51 ×   
D) 2.41 × 1023 
E) 2.41 ×

Question 18

The molar mass of copper(II)chloride is 134.5 g/mole.

Accepted Answer

A) True 
 B)False

Question 19

One mole of particles of any substance contains how many particles?

Accepted Answer

A)    particles 
B) 3 ×   particles 
C) 3 ×   particles 
D) 6.02 ×   particles 
E) 6.02 ×   particles 
A)    particles 
B) 3 ×   particles 
C) 3 ×   particles 
D) 6.02 ×   particles 
E) 6.02 ×   particles

Question 20

What is the coefficient of hydrogen,   ,when the following equation is balanced? 
Al +     →       + ?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Any reaction that absorbs 150 kcal of energy can be classified as ________.

In any balanced chemical equation,the number of each type of atom on both sides of the equation is ________.

A chemical equation is balanced when ________.

What is the molar mass of sucrose ( )?

For the following question(s),consider the following balanced equation. + 6 O → 3 + 2 -How many grams of are produced from 125 g of and excess ? + 2 → + 2 O

For the following reaction,what is the correct coefficient for the ? Fe + HCl → FeC +

For the following question(s),consider the following equation. 2Mg + → 2MgO -The number of moles of oxygen gas needed to react with 4.0 moles of Mg is ________.

Which reactant is oxidized in the following reaction? Zn + 2HCl → Zn +

In this reaction,what is the correct coefficient for sodium chloride? Pb(N + ? NaCl → PbC + ? NaN

Answer the question(s)below about the following reaction. 2 → 2 O + -How many grams of water will 100.grams of hydrogen peroxide produce?

The molar mass of potassium is ________.

The following reaction is correctly balanced. 2 + 5 → 4C + O

3.00 moles of have a mass of ________.

Calculate the molar mass of magnesium chloride,MgCl₂

For the following question(s),consider the following balanced equation. + 6 O → 3 + 2 -How many grams of O are needed to produce 150 g of ?

For the following question(s),consider the following balanced equation. + 6 O → 3 + 2 -Find the mass of that is produced when 25.0 grams of reacts with HCl according to the following equation. + 6HCl → 2 + 3 O

One mole of copper(II)sulfate,CuS ,contains ________ O atoms.

The molar mass of copper(II)chloride is 134.5 g/mole.

One mole of particles of any substance contains how many particles?

What is the coefficient of hydrogen, ,when the following equation is balanced? Al + → + ?

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Exam 7: Chemical Quantities and Reactions

Any reaction that absorbs 150 kcal of energy can be classified as ________.

In any balanced chemical equation,the number of each type of atom on both sides of the equation is ________.

A chemical equation is balanced when ________.

What is the molar mass of sucrose ( )?

For the following question(s),consider the following balanced equation. + 6 O → 3 + 2 -How many grams of are produced from 125 g of and excess ? + 2 → + 2 O

For the following reaction,what is the correct coefficient for the ? Fe + HCl → FeC +

For the following question(s),consider the following equation. 2Mg + → 2MgO -The number of moles of oxygen gas needed to react with 4.0 moles of Mg is ________.

Which reactant is oxidized in the following reaction? Zn + 2HCl → Zn +

In this reaction,what is the correct coefficient for sodium chloride? Pb(N + ? NaCl → PbC + ? NaN

Answer the question(s)below about the following reaction. 2 → 2 O + -How many grams of water will 100.grams of hydrogen peroxide produce?

The molar mass of potassium is ________.

The following reaction is correctly balanced. 2 + 5 → 4C + O

3.00 moles of have a mass of ________.

Calculate the molar mass of magnesium chloride,MgCl2

For the following question(s),consider the following balanced equation. + 6 O → 3 + 2 -How many grams of O are needed to produce 150 g of ?

For the following question(s),consider the following balanced equation. + 6 O → 3 + 2 -Find the mass of that is produced when 25.0 grams of reacts with HCl according to the following equation. + 6HCl → 2 + 3 O

One mole of copper(II)sulfate,CuS ,contains ________ O atoms.

The molar mass of copper(II)chloride is 134.5 g/mole.

One mole of particles of any substance contains how many particles?

What is the coefficient of hydrogen, ,when the following equation is balanced? Al + → + ?

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Gases

Solutions

Acids and Bases and Equilibrium

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Alcohols, Thiols, Ethers, Aldehydes, and Ketones

Carbohydrates

Carboxylic Acids, Esters, Amines, and Amides

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Calculate the molar mass of magnesium chloride,MgCl₂