CHEM 104 Exam 2 Questions and
Answers Verified Solutions Latest Update
2026/2027
Question:
• metalloids
Answer:
semi conductors are _______
A) metalloids. B) halogens C) transition elements.
D) metals. E) nonmetals.
Question:
• O3
Answer:
Which of the following is an element and a molecule?
A) Air B) He C) CO2 D) C E) O3
Question:
• fluorine
Answer:
The ionization energy of chlorine is lower than the ionization energy of ________.
A) calcium B) sodium C) hydrogen D) fluorine E) lithium
Question:
• sugar
Answer:
Choose the pure substance from the list below.
A) lemonade B) sea water C) air D) sugar E) coffee
, Question:
• 305 mg
Answer:
the recommended adult dos of elixophyllin, a drug used to treat asthma is 6.00 mg/kg of body mass.
Calculate the dose in milligrams for a 112 lb person (1 kg= 2.20 lb)
A) 305 mg B) 672 mg C) 670 mg D) 300 mg E) 1478 mg
Question:
• protons
Answer:
Z is the number of ________ in an atom.
A) protons and electrons B) protons
D) neutrons E) protons and neutrons
C) electrons
Question:
• 1.25x 10^3 kL
Answer:
how many kL does a 1.25x10^8 cL sample contain?
Question:
• unreactive
Answer:
Noble gases ________.
A) react vigorously with water
C) are unreactive
E) are good conductors of electricity
B) are liquids at room temperature
D) melt at high temperatures
Answers Verified Solutions Latest Update
2026/2027
Question:
• metalloids
Answer:
semi conductors are _______
A) metalloids. B) halogens C) transition elements.
D) metals. E) nonmetals.
Question:
• O3
Answer:
Which of the following is an element and a molecule?
A) Air B) He C) CO2 D) C E) O3
Question:
• fluorine
Answer:
The ionization energy of chlorine is lower than the ionization energy of ________.
A) calcium B) sodium C) hydrogen D) fluorine E) lithium
Question:
• sugar
Answer:
Choose the pure substance from the list below.
A) lemonade B) sea water C) air D) sugar E) coffee
, Question:
• 305 mg
Answer:
the recommended adult dos of elixophyllin, a drug used to treat asthma is 6.00 mg/kg of body mass.
Calculate the dose in milligrams for a 112 lb person (1 kg= 2.20 lb)
A) 305 mg B) 672 mg C) 670 mg D) 300 mg E) 1478 mg
Question:
• protons
Answer:
Z is the number of ________ in an atom.
A) protons and electrons B) protons
D) neutrons E) protons and neutrons
C) electrons
Question:
• 1.25x 10^3 kL
Answer:
how many kL does a 1.25x10^8 cL sample contain?
Question:
• unreactive
Answer:
Noble gases ________.
A) react vigorously with water
C) are unreactive
E) are good conductors of electricity
B) are liquids at room temperature
D) melt at high temperatures
