Question 1

One mole of silver would contain the same number of atoms as a mole of gold.

Accepted Answer

A) True 
 B)False

Question 2

How many hydrogen atoms are in 1.00 mole of NH3?

Accepted Answer

A)  3.00 
B)  6.02 * 1023 
C)  12.0 * 1023 
D)  18.1 * 1023 
A)  3.00 
B)  6.02 * 1023 
C)  12.0 * 1023 
D)  18.1 * 1023

Question 3

The symbols for all of the elements are derived from the Latin names.

Accepted Answer

A) True 
 B)False

Question 4

Calcium supplements can be taken in 1,000 mg increments.

Accepted Answer

A) True 
 B)False

Question 5

How many neutrons are in an atom that has a mass number of 75 and contains 35 protons?

Accepted Answer

A)  40 
B)  35 
C)  75 
D)  can't tell 
A)  40 
B)  35 
C)  75 
D)  can't tell

Question 6

The weight % of S in K2SO4 is _____ .

Accepted Answer

A)  14.2% 
B)  18.4% 
C)  54.4% 
D)  22.4% 
A)  14.2% 
B)  18.4% 
C)  54.4% 
D)  22.4%

Question 7

An MRI instrument cause the hydrogens in your body to line up because they are exposed to a very strong magnetic field.

Accepted Answer

A) True 
 B)False

Question 8

If you have 3.011 *1023 atoms of carbon,what would you expect its mass to be?

Accepted Answer

A)  12.01 g 
B)  6.005 g 
C)  3.003 g 
D)  1.000 g 
A)  12.01 g 
B)  6.005 g 
C)  3.003 g 
D)  1.000 g

Question 9

Calculate the weight percentage of hydrogen in water.

Accepted Answer

A)  33.3 
B)  66.7 
C)  2.00 
D)  11.1 
A)  33.3 
B)  66.7 
C)  2.00 
D)  11.1

Question 10

The mass of mercury (Hg),a liquid at room temperature,is 200.6 amu/mol.A 200.6 gram sample of mercury is heated until it boils.What is the mass of one mole of mercury vapor (gas)?

Accepted Answer

A)  <200.6 or it wouldn't be a gas 
B)  the same as Avogadro's number 
C)  the same as when it is a liquid 
D)  none of the answers are correct 
A)  <200.6 or it wouldn't be a gas 
B)  the same as Avogadro's number 
C)  the same as when it is a liquid 
D)  none of the answers are correct

Question 11

An isotope of gallium consisting of 31 protons and 37 neutrons can be represented using the symbol shown below.

Accepted Answer

A) True 
 B)False

Question 12

Isotopes of the same element always have the same atomic mass.

Accepted Answer

A) True 
 B)False

Question 13

Electrons do not make an important contribution to the mass of an atom.

Accepted Answer

A) True 
 B)False

Question 14

What is the molar mass of Ba3(PO4)2?

Accepted Answer

A)  232.30 g/mol 
B)  327.27 g/mol 
C)  369.63 g/mol 
D)  601.92 g/mol 
A)  232.30 g/mol 
B)  327.27 g/mol 
C)  369.63 g/mol 
D)  601.92 g/mol

Question 15

One mole of H2O contains 2.0 grams of hydrogen.

Accepted Answer

A) True 
 B)False

Question 16

H2O2 contains equal parts by weight of hydrogen and oxygen.

Accepted Answer

A) True 
 B)False

Question 17

A mole of copper contains the same number of atoms as a mole of zinc.

Accepted Answer

A) True 
 B)False

Question 18

How many moles of N2O contain the same number of nitrogen atoms as 4.60 g of NO2?

Accepted Answer

A)  0.500 
B)  0.0500 
C)  0.100 
D)  0.200 
A)  0.500 
B)  0.0500 
C)  0.100 
D)  0.200

Question 19

How many electrons are in a neutral atom of carbon-13 (13C)?

Accepted Answer

A)  6 
B)  18 
C)  12 
D)  no way to tell 
A)  6 
B)  18 
C)  12 
D)  no way to tell

Question 20

Atoms that have the same atomic number but differ by mass number are called?

Accepted Answer

A)  protons 
B)  neutrons 
C)  isotopes 
D)  positrons 
A)  protons 
B)  neutrons 
C)  isotopes 
D)  positrons

Exam 2: Atoms and Molecules

One mole of silver would contain the same number of atoms as a mole of gold.

How many hydrogen atoms are in 1.00 mole of NH3?

The symbols for all of the elements are derived from the Latin names.

Calcium supplements can be taken in 1,000 mg increments.

How many neutrons are in an atom that has a mass number of 75 and contains 35 protons?

The weight % of S in K2SO4 is _____ .

An MRI instrument cause the hydrogens in your body to line up because they are exposed to a very strong magnetic field.

If you have 3.011 *1023 atoms of carbon,what would you expect its mass to be?

Calculate the weight percentage of hydrogen in water.

The mass of mercury (Hg),a liquid at room temperature,is 200.6 amu/mol.A 200.6 gram sample of mercury is heated until it boils.What is the mass of one mole of mercury vapor (gas)?

An isotope of gallium consisting of 31 protons and 37 neutrons can be represented using the symbol shown below.

Isotopes of the same element always have the same atomic mass.

Electrons do not make an important contribution to the mass of an atom.

What is the molar mass of Ba3(PO4)2?

One mole of H2O contains 2.0 grams of hydrogen.

H2O2 contains equal parts by weight of hydrogen and oxygen.

A mole of copper contains the same number of atoms as a mole of zinc.

How many moles of N2O contain the same number of nitrogen atoms as 4.60 g of NO2?

How many electrons are in a neutral atom of carbon-13 (13C)?

Atoms that have the same atomic number but differ by mass number are called?

Matter, measurements, and Calculations

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids,bases,and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

How many hydrogen atoms are in 1.00 mole of NH₃?

The weight % of S in K₂SO₄ is _____ .

If you have 3.011 *10²³ atoms of carbon,what would you expect its mass to be?

What is the molar mass of Ba₃(PO₄)₂?

One mole of H₂O contains 2.0 grams of hydrogen.

H₂O₂ contains equal parts by weight of hydrogen and oxygen.

How many moles of N₂O contain the same number of nitrogen atoms as 4.60 g of NO₂?

How many electrons are in a neutral atom of carbon-13 (¹³C)?