Question 1

How many atoms of sodium are there in 0.200 moles sodium atoms?

Accepted Answer

A)  6.02 x 1024 atoms 
B)  6.02 x 1023 atoms 
C)  1.20 x 1023 atoms 
D)  1.20 x 1024atoms 
A)  6.02 x 1024 atoms 
B)  6.02 x 1023 atoms 
C)  1.20 x 1023 atoms 
D)  1.20 x 1024atoms

Question 2

Whereas x-ray works well for bones, the value of MRI imaging is that

Accepted Answer

A)  it provides a 3 dimensional view of bones. 
B)  it provides images of the inside of the body. 
C)  it provides a clear picture of gamma rays produced within the tissue. 
D)  it provides images used in studies, such as monitoring sugar usage. 
A)  it provides a 3 dimensional view of bones. 
B)  it provides images of the inside of the body. 
C)  it provides a clear picture of gamma rays produced within the tissue. 
D)  it provides images used in studies, such as monitoring sugar usage.

Question 3

The atomic number is equal to the number of ___ found in a specific element.

Accepted Answer

The answer of The atomic number is equal to the...

Question 4

0.04 mSv is the same as ___millirads.

Accepted Answer

The answer of 0.04 mSv is the same as ___millirads....

Question 5

Calculate the number of moles in 2.61 grams of silicon.

Accepted Answer

The answer of Calculate the number of moles in 2.61...

Question 6

What is the number of atoms present in a 20.gram sample of lithium?

Accepted Answer

A)  1.38 x 102 
B)  1.20 x 1025 
C)  1.70 x 1024 
D)  4.00x 1024 
A)  1.38 x 102 
B)  1.20 x 1025 
C)  1.70 x 1024 
D)  4.00x 1024

Question 7

Which equation below correctly depicts nitrogen-13 emitting a positron?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 8

The quality factor (QF) for alpha particles is 20. What is the radiation dose in remsfor this patient if he absorbed 13 rads of alpha particles?

Accepted Answer

A)  20 rems 
B)  13 rems 
C)  23 rems 
D)  260 rems 
A)  20 rems 
B)  13 rems 
C)  23 rems 
D)  260 rems

Question 9

Calcium is a transition metal as is indicated by its location in the periodic table.

Accepted Answer

A) True 
 B)False

Question 10

What type of radiation will be emitted in the reaction below?

Accepted Answer

The answer of What type of radiation will be emitted...

Question 11

The higher the quality factor (QF) of a radiation, the less harmful the exposure to the radiation.

Accepted Answer

A) True 
 B)False

Question 12

A sample of magnesium weighs 10 grams. How many moles of magnesium are there in the sample?

Accepted Answer

A)  10 moles 
B)  6 x 1023 moles 
C)  60 x 1023 atoms 
D)  0.4 moles 
A)  10 moles 
B)  6 x 1023 moles 
C)  60 x 1023 atoms 
D)  0.4 moles

Question 13

Atoms of elements belonging to the same group have an identical number of

Accepted Answer

A)  total electrons. 
B)  energy levels. 
C)  inner electrons. 
D)  valence electrons. 
A)  total electrons. 
B)  energy levels. 
C)  inner electrons. 
D)  valence electrons.

Question 14

The time required for one half of a sample to undergo radioactive decay is the ___.

Accepted Answer

The answer of The time required for one half of...

Question 15

Boron, which occurs in nature as 105B (amu = 10.013) and 115B (amu = 11.009), has an atomic weight of 10.81. Which of the following statements is true?

Accepted Answer

A)  isotope115B predominates 
B)  isotope105B predominates 
C)  both isotopes have equal percentages in nature 
D)  the atomic weight of 10.013 amu is nearest the correct value for boron 
A)  isotope115B predominates 
B)  isotope105B predominates 
C)  both isotopes have equal percentages in nature 
D)  the atomic weight of 10.013 amu is nearest the correct value for boron

Question 16

Which statement is incorrect?

Accepted Answer

A)  According to the atomic theory, all matter is composed of atoms. 
B)  Protons, neutrons, and electrons are subatomic particles. 
C)  Electrons have greater mass than protons. 
D)  Neutrons are found in the nucleus of the atom. 
A)  According to the atomic theory, all matter is composed of atoms. 
B)  Protons, neutrons, and electrons are subatomic particles. 
C)  Electrons have greater mass than protons. 
D)  Neutrons are found in the nucleus of the atom.

Question 17

12.5 grams of gold contains how many gold atoms?

Accepted Answer

The answer of 12.5 grams of gold contains how many...

Question 18

___ radiation is electromagnetic radiation much like x-rays.

Accepted Answer

The answer of ___ radiation is electromagnetic radiation much like...

Question 19

Emission of a beta particle increases the number of protons in an atom's nucleus.

Accepted Answer

A) True 
 B)False

Question 20

Iron has the atomic weight of 55.9. What is the number of atoms in one mole of iron?

Accepted Answer

A)  55.9 atoms 
B)  1 x 1024 atoms 
C)  6.02 x 1023 atoms 
D)  12 dozen atoms 
A)  55.9 atoms 
B)  1 x 1024 atoms 
C)  6.02 x 1023 atoms 
D)  12 dozen atoms

How many atoms of sodium are there in 0.200 moles sodium atoms?

Whereas x-ray works well for bones, the value of MRI imaging is that

The atomic number is equal to the number of ___ found in a specific element.

0.04 mSv is the same as ___millirads.

Calculate the number of moles in 2.61 grams of silicon.

What is the number of atoms present in a 20.gram sample of lithium?

Which equation below correctly depicts nitrogen-13 emitting a positron?

The quality factor (QF) for alpha particles is 20. What is the radiation dose in remsfor this patient if he absorbed 13 rads of alpha particles?

Calcium is a transition metal as is indicated by its location in the periodic table.

What type of radiation will be emitted in the reaction below?

The higher the quality factor (QF) of a radiation, the less harmful the exposure to the radiation.

A sample of magnesium weighs 10 grams. How many moles of magnesium are there in the sample?

Atoms of elements belonging to the same group have an identical number of

The time required for one half of a sample to undergo radioactive decay is the ___.

Boron, which occurs in nature as ¹⁰₅B (amu = 10.013) and ¹¹₅B (amu = 11.009), has an atomic weight of 10.81. Which of the following statements is true?

Which statement is incorrect?

12.5 grams of gold contains how many gold atoms?

___ radiation is electromagnetic radiation much like x-rays.

Emission of a beta particle increases the number of protons in an atom's nucleus.

Iron has the atomic weight of 55.9. What is the number of atoms in one mole of iron?

Science and Measurements

Compounds

An Introduction to Organic Compounds

Reactions

Gases, Solutions, Colloids, and Suspensions

Acids, Bases, and Equilibrium

Organic Reactions Hydrocarbons, Carboxlic Acids, Amines, and Related Compounds

Organic Reactions 2-Alcohols, Ethers, Aldehydes, and Ketones

Carbohydrates

Lipids and Membranes

Peptides, Proteins, and Enzymes

Nucleic Acids

Metabolism

Filters

Exam 2: Atoms and Elements

How many atoms of sodium are there in 0.200 moles sodium atoms?

Whereas x-ray works well for bones, the value of MRI imaging is that

The atomic number is equal to the number of ___ found in a specific element.

0.04 mSv is the same as ___millirads.

Calculate the number of moles in 2.61 grams of silicon.

What is the number of atoms present in a 20.gram sample of lithium?

Which equation below correctly depicts nitrogen-13 emitting a positron?

The quality factor (QF) for alpha particles is 20. What is the radiation dose in remsfor this patient if he absorbed 13 rads of alpha particles?

Calcium is a transition metal as is indicated by its location in the periodic table.

What type of radiation will be emitted in the reaction below?

The higher the quality factor (QF) of a radiation, the less harmful the exposure to the radiation.

A sample of magnesium weighs 10 grams. How many moles of magnesium are there in the sample?

Atoms of elements belonging to the same group have an identical number of

The time required for one half of a sample to undergo radioactive decay is the ___.

Boron, which occurs in nature as 105B (amu = 10.013) and 115B (amu = 11.009), has an atomic weight of 10.81. Which of the following statements is true?

Which statement is incorrect?

12.5 grams of gold contains how many gold atoms?

___ radiation is electromagnetic radiation much like x-rays.

Emission of a beta particle increases the number of protons in an atom's nucleus.

Iron has the atomic weight of 55.9. What is the number of atoms in one mole of iron?

Science and Measurements

Compounds

An Introduction to Organic Compounds

Reactions

Gases, Solutions, Colloids, and Suspensions

Acids, Bases, and Equilibrium

Organic Reactions Hydrocarbons, Carboxlic Acids, Amines, and Related Compounds

Organic Reactions 2-Alcohols, Ethers, Aldehydes, and Ketones

Carbohydrates

Lipids and Membranes

Peptides, Proteins, and Enzymes

Nucleic Acids

Metabolism

Filters

Boron, which occurs in nature as ¹⁰₅B (amu = 10.013) and ¹¹₅B (amu = 11.009), has an atomic weight of 10.81. Which of the following statements is true?