Question 1

Individual organisms store their genetic information in _____,which consist of two intertwined molecular chains.

Accepted Answer

A) ​deoxyribonucleic acids 
B) ​prokary​otic cells 
C) ​peptide amino ac​ids 
D) ​eukaryotic​ cells 
E) ​thylakoid membranes 
A) ​deoxyribonucleic acids 
B) ​prokary​otic cells 
C) ​peptide amino ac​ids 
D) ​eukaryotic​ cells 
E) ​thylakoid membranes

Question 2

A thin sheet of iridium metal that is 3.12 cm by 5.21 cm has a mass of 87.2 g and a thickness of 2.360 mm.What is the density of iridium?

Accepted Answer

A) 22.600 g/cm3 
B) 2.260 g/cm3 
C) 3.36 × 103 g/cm3 
D) 0.044 g/cm3 
E) 0.441 g/cm3 
A) 22.600 g/cm3 
B) 2.260 g/cm3 
C) 3.36 × 103 g/cm3 
D) 0.044 g/cm3 
E) 0.441 g/cm3

Question 3

What length of a cylindrical piece of tungsten wire having a radius of 2.11 mm has a mass of 66.6 g? The density of tungsten is 19.25 g/cm3.

Accepted Answer

A) 2.47× 10-3 m 
B) 1.79 × 102 m 
C) 2.47 × 10-1 m 
D) 4.04 × 10-2 m 
E) 4.04 × 10-4 m 
A) 2.47× 10-3 m 
B) 1.79 × 102 m 
C) 2.47 × 10-1 m 
D) 4.04 × 10-2 m 
E) 4.04 × 10-4 m

Question 4

The Rankine (oRa)temperature scale is often used in engineering.Like the Kelvin scale,the Rankine scale is an absolute temperature scale; but the size of a Rankine degree is the same as the size of a Fahrenheit degree.Thus,0 K = 0oRa and 0oF = 459.67oRa.What is the temperature 330.7oRa expressed on the Fahrenheit scale?

Accepted Answer

A) 790.4oF 
B) 1054.9oF 
C) 603.9oF 
D) 330.7oF 
E) -129.0oF 
A) 790.4oF 
B) 1054.9oF 
C) 603.9oF 
D) 330.7oF 
E) -129.0oF

Question 5

The Rankine (oRa)temperature scale is often used in engineering.Like the Kelvin scale,the Rankine scale is an absolute temperature scale; but the size of a Rankine degree is the same as the size of a Fahrenheit degree.Thus,0 K = 0oRa and 0oF = 459.67oRa.What is the temperature23.3oC expressed on the Rankine scale?

Accepted Answer

A) 533.6oRa 
B) 296.5oRa 
C) 23.3oRa 
D) 41.9oRa 
E) 315.1oRa 
A) 533.6oRa 
B) 296.5oRa 
C) 23.3oRa 
D) 41.9oRa 
E) 315.1oRa

Question 6

A sample of magnesium is burned in oxygen to form magnesium oxide.What mass of oxygen is consumed if 74.62 g magnesium oxide is formed from 45.00 g magnesium?

Accepted Answer

A) 29.62 g 
B) 119.62 g 
C) 3358.06 g 
D) 0.60 g 
E) none of the above. 
A) 29.62 g 
B) 119.62 g 
C) 3358.06 g 
D) 0.60 g 
E) none of the above.

Question 7

A clear colorless liquid in an open beaker was heated to boiling.The liquid began to boil at 110°C,and as vapors escaped,the temperature of boiling gradually increased to 115°C,at which point the heating was stopped.On the basis of this information,we can say that the material in the beaker was a

Accepted Answer

A) pure compound. 
B) homogeneous solution. 
C) pure substance. 
D) pure element. 
E) heterogeneous solution. 
A) pure compound. 
B) homogeneous solution. 
C) pure substance. 
D) pure element. 
E) heterogeneous solution.

Question 8

Express the volume 657.8 cm3 in liters.

Accepted Answer

A) 6.578 L 
B) 0.06578 L 
C) 0.6578 L 
D) 65.78 L 
E) 657.8 L 
A) 6.578 L 
B) 0.06578 L 
C) 0.6578 L 
D) 65.78 L 
E) 657.8 L

Question 9

The term that is related to the reproducibility (repeatability)of a measurement is

Accepted Answer

A) accuracy. 
B) qualitative. 
C) quantitative. 
D) precision. 
E) property. 
A) accuracy. 
B) qualitative. 
C) quantitative. 
D) precision. 
E) property.

Question 10

6.8 kilogram(s)contains this many grams:

Accepted Answer

A) 6.8 × 102 
B) 0.68 
C) 6.8 × 10-3 
D) 68 
E) 6.8 × 103 
A) 6.8 × 102 
B) 0.68 
C) 6.8 × 10-3 
D) 68 
E) 6.8 × 103

Question 11

Order the four metric units from smallest to largest.
1)kiloliter 2)centiliter 3)nanoliter 4)milliliter

Accepted Answer

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

Individual organisms store their genetic information in _____,which consist of two intertwined molecular chains.

A thin sheet of iridium metal that is 3.12 cm by 5.21 cm has a mass of 87.2 g and a thickness of 2.360 mm.What is the density of iridium?

What length of a cylindrical piece of tungsten wire having a radius of 2.11 mm has a mass of 66.6 g? The density of tungsten is 19.25 g/cm³.

A sample of magnesium is burned in oxygen to form magnesium oxide.What mass of oxygen is consumed if 74.62 g magnesium oxide is formed from 45.00 g magnesium?

A clear colorless liquid in an open beaker was heated to boiling.The liquid began to boil at 110°C,and as vapors escaped,the temperature of boiling gradually increased to 115°C,at which point the heating was stopped.On the basis of this information,we can say that the material in the beaker was a

Express the volume 657.8 cm³ in liters.

The term that is related to the reproducibility (repeatability)of a measurement is

6.8 kilogram(s)contains this many grams:

Order the four metric units from smallest to largest. 1)kiloliter 2)centiliter 3)nanoliter 4)milliliter

Atoms, molecules, and Ions

Calculations With Chemical Formulas and Equations

Chemical Reactions

The Gaseous State

Thermochemistry

Quantum Theory of the Atom

Electron Configurations and Periodicity

Ionic and Covalent Bonding

Molecular Geometry and Chemical Bonding Theory

States of Matter; Liquids and Solids

Solutions

Rates of Reaction

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Thermodynamics and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry of the Main-Group Metals

The Transition Elements and Coordination Compounds

Organic Chemistry

Polymer Materials: Synthetic and Biological

Filters

Exam 1: Chemistry and Measurement

Individual organisms store their genetic information in _____,which consist of two intertwined molecular chains.

A thin sheet of iridium metal that is 3.12 cm by 5.21 cm has a mass of 87.2 g and a thickness of 2.360 mm.What is the density of iridium?

What length of a cylindrical piece of tungsten wire having a radius of 2.11 mm has a mass of 66.6 g? The density of tungsten is 19.25 g/cm3.

A sample of magnesium is burned in oxygen to form magnesium oxide.What mass of oxygen is consumed if 74.62 g magnesium oxide is formed from 45.00 g magnesium?

A clear colorless liquid in an open beaker was heated to boiling.The liquid began to boil at 110°C,and as vapors escaped,the temperature of boiling gradually increased to 115°C,at which point the heating was stopped.On the basis of this information,we can say that the material in the beaker was a

Express the volume 657.8 cm3 in liters.

The term that is related to the reproducibility (repeatability)of a measurement is

6.8 kilogram(s)contains this many grams:

Order the four metric units from smallest to largest. 1)kiloliter 2)centiliter 3)nanoliter 4)milliliter

Atoms, molecules, and Ions

Calculations With Chemical Formulas and Equations

Chemical Reactions

The Gaseous State

Thermochemistry

Quantum Theory of the Atom

Electron Configurations and Periodicity

Ionic and Covalent Bonding

Molecular Geometry and Chemical Bonding Theory

States of Matter; Liquids and Solids

Solutions

Rates of Reaction

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Thermodynamics and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry of the Main-Group Metals

The Transition Elements and Coordination Compounds

Organic Chemistry

Polymer Materials: Synthetic and Biological

Filters

What length of a cylindrical piece of tungsten wire having a radius of 2.11 mm has a mass of 66.6 g? The density of tungsten is 19.25 g/cm³.

Express the volume 657.8 cm³ in liters.