INTRODUCTORY CHEMISTRY CHAPTER
1,2,3, AND 4 EXAM WITH VERIFIED
ANSWERS 2025
A certain chemical reaction proceeds optimally at 299C. What is this in F?
- answer-570.2
A certain compound gives off a lot of heat when it reacts. Which of the following values
for this compound is most likely high before it reacts?
- answer-Potential energy
A nonmetal atom that gains an electron is know as a(n)
- answer-Anion
A sample of propane (29.3) is burned in 83.7g of oxygen in a chemical reaction to
produce water and carbon dioxide (CO2). If 82.2g of CO2 is formed, how much water, in
grams, was also produced?
- answer-30.8
All of the below are physical properties of zinc (Zn) expect:
- answer-Releases H2(g) when mixed with hydrochloric acid (HCI)
Calculate the density of an unknown metal at 0c if 5.52 grams of ice occupies a volume
of 6.95mL.
- answer-0.80g/mL
Chlorine consists of only two isotopes: 35Cl and 37Cl. What is the abundance of the
37Cl isotope? Hint: use algebra to find the missing abundance.
- answer-25
Compared to the specific heat of metals, the specific heat of rubber is
- answer-Much lower
Elemental boron is primarily composed of two isotopes; boron-10 (10.0129 amu) and
boron-11 (11,0093 amu). What can be said about the relative natural abundance of
these isotopes?
- answer-Boron-11 is naturally present in larger amounts
, From the results of his gold foil experiment, Rutherford concluded that
- answer-Atoms are composed of a small, dense nucleus surrounded by a cloud of
electrons
How many milliliters are in 3 quarts?
- answer-2839.06
How many neutrons are in an atom of bismuth, on average?
- answer-125
How many protons and electrons are present in a Fe3+ ion?
- answer-26 and 23
It is recommended that a football be inflated to about 9.1 psi (pounds per square inch).
Convert this pressure into mmHg (millimeter of mercury) using the following information.
1 atm = 14.7 psi and 1 atm = 760 mmHg
- answer-470.5
Of the three states of matter, which one normally possesses the highest density?
- answer-Solid
Solids, such as naphthalene (mothballs) that generate an odor are undergoing which
process?
- answer-Sublimation
The density of lead is 11.35g/mL. The experimental values obtained for the density of
lead are 11.3, 11.3, and 11.4g/mL. Which one of the following best describes this
collection of data?
- answer-Both Precise and Accurate
The density of lead is 11.35g/mL. The experimental values obtained for the density of
lead are 15.9, 15.8, and 15.9g/mL. Which one of the following best describes this
collection of data?
- answer-Precise
The following values were obtained by measuring the length of an object three separate
times. Which one of the following best describes this data?
5.432
5.392
5.486
- answer-Precise
The high temperature for a day in June is 93F. What is this temperature reported in
kelvin?
- answer-307
1,2,3, AND 4 EXAM WITH VERIFIED
ANSWERS 2025
A certain chemical reaction proceeds optimally at 299C. What is this in F?
- answer-570.2
A certain compound gives off a lot of heat when it reacts. Which of the following values
for this compound is most likely high before it reacts?
- answer-Potential energy
A nonmetal atom that gains an electron is know as a(n)
- answer-Anion
A sample of propane (29.3) is burned in 83.7g of oxygen in a chemical reaction to
produce water and carbon dioxide (CO2). If 82.2g of CO2 is formed, how much water, in
grams, was also produced?
- answer-30.8
All of the below are physical properties of zinc (Zn) expect:
- answer-Releases H2(g) when mixed with hydrochloric acid (HCI)
Calculate the density of an unknown metal at 0c if 5.52 grams of ice occupies a volume
of 6.95mL.
- answer-0.80g/mL
Chlorine consists of only two isotopes: 35Cl and 37Cl. What is the abundance of the
37Cl isotope? Hint: use algebra to find the missing abundance.
- answer-25
Compared to the specific heat of metals, the specific heat of rubber is
- answer-Much lower
Elemental boron is primarily composed of two isotopes; boron-10 (10.0129 amu) and
boron-11 (11,0093 amu). What can be said about the relative natural abundance of
these isotopes?
- answer-Boron-11 is naturally present in larger amounts
, From the results of his gold foil experiment, Rutherford concluded that
- answer-Atoms are composed of a small, dense nucleus surrounded by a cloud of
electrons
How many milliliters are in 3 quarts?
- answer-2839.06
How many neutrons are in an atom of bismuth, on average?
- answer-125
How many protons and electrons are present in a Fe3+ ion?
- answer-26 and 23
It is recommended that a football be inflated to about 9.1 psi (pounds per square inch).
Convert this pressure into mmHg (millimeter of mercury) using the following information.
1 atm = 14.7 psi and 1 atm = 760 mmHg
- answer-470.5
Of the three states of matter, which one normally possesses the highest density?
- answer-Solid
Solids, such as naphthalene (mothballs) that generate an odor are undergoing which
process?
- answer-Sublimation
The density of lead is 11.35g/mL. The experimental values obtained for the density of
lead are 11.3, 11.3, and 11.4g/mL. Which one of the following best describes this
collection of data?
- answer-Both Precise and Accurate
The density of lead is 11.35g/mL. The experimental values obtained for the density of
lead are 15.9, 15.8, and 15.9g/mL. Which one of the following best describes this
collection of data?
- answer-Precise
The following values were obtained by measuring the length of an object three separate
times. Which one of the following best describes this data?
5.432
5.392
5.486
- answer-Precise
The high temperature for a day in June is 93F. What is this temperature reported in
kelvin?
- answer-307
