EXAM 2 CHM101 (NEW 2025/ 2026
Update) Introduction to General, Organic,
and Biochemistry Questions & Answers
{Grade A} 100% Correct (Verified
Solutions)- GCU
What volume of 0.150 M iron(II) sulfate is required to produce a 250 mL solution that
is 0.045 M iron(II) sulfate? - correct answer 75 mL
What volume of 0.70 M KOH is needed to neutralize 25.0 mL of 0.55 M HCl? - correct
answer 20. mL
What mass of AgBr (FW = 187.8) will be formed if excess 0.250 M AgNO3 solution is
added to 0.100 L of 0.150 M MgBr2 solution?
MgBr2(aq) + 2AgNO3(aq) → 2AgBr(s) + Mg(NO3)2(aq) - correct answer 5.63 g
pH of a 0.0021 M hydrochloric acid solution - correct answer 2.68
Which of the following solutions has the highest [OH- ]? - correct answer 0.01 M
Ca(OH)2
A neon (Ne) atom and an argon (Ar) atom are traveling at the same velocity. Which
one has higher kinetic energy? - correct answer Ar
, EXAM 2 CHM101 (NEW 2025/ 2026
Update) Introduction to General, Organic,
and Biochemistry Questions & Answers
{Grade A} 100% Correct (Verified
Solutions)- GCU
Which of the following statements are true about a system that absorbs 300. J of heat
from the surroundings while performing 150. J of work on the surroundings?
I. The internal energy change of the system is +150. J.
II. The process described above is exothermic.
III. The internal energy change of the system is -150. J.
IV. The process described above is endothermic. - correct answer I, IV
Which of the following is the best description of the First Law of Thermodynamics? -
correct answer The total energy of the universe is conserved.
How many atoms are there in one mole of gallium atoms?
a) 6.02 x 10^23 atoms
b) one (1)
c) 69.72 g
d) 69.72 atoms - correct answer a) 6.02 x 10^23 atoms
What is the molar mass of dinitrogen trioxide?
[Molar masses (g/mol): N=14.01; O= 16.00]
a) 30.01 g/mol
b) 76.02 g/mol
c) 46.01 g/mol
Update) Introduction to General, Organic,
and Biochemistry Questions & Answers
{Grade A} 100% Correct (Verified
Solutions)- GCU
What volume of 0.150 M iron(II) sulfate is required to produce a 250 mL solution that
is 0.045 M iron(II) sulfate? - correct answer 75 mL
What volume of 0.70 M KOH is needed to neutralize 25.0 mL of 0.55 M HCl? - correct
answer 20. mL
What mass of AgBr (FW = 187.8) will be formed if excess 0.250 M AgNO3 solution is
added to 0.100 L of 0.150 M MgBr2 solution?
MgBr2(aq) + 2AgNO3(aq) → 2AgBr(s) + Mg(NO3)2(aq) - correct answer 5.63 g
pH of a 0.0021 M hydrochloric acid solution - correct answer 2.68
Which of the following solutions has the highest [OH- ]? - correct answer 0.01 M
Ca(OH)2
A neon (Ne) atom and an argon (Ar) atom are traveling at the same velocity. Which
one has higher kinetic energy? - correct answer Ar
, EXAM 2 CHM101 (NEW 2025/ 2026
Update) Introduction to General, Organic,
and Biochemistry Questions & Answers
{Grade A} 100% Correct (Verified
Solutions)- GCU
Which of the following statements are true about a system that absorbs 300. J of heat
from the surroundings while performing 150. J of work on the surroundings?
I. The internal energy change of the system is +150. J.
II. The process described above is exothermic.
III. The internal energy change of the system is -150. J.
IV. The process described above is endothermic. - correct answer I, IV
Which of the following is the best description of the First Law of Thermodynamics? -
correct answer The total energy of the universe is conserved.
How many atoms are there in one mole of gallium atoms?
a) 6.02 x 10^23 atoms
b) one (1)
c) 69.72 g
d) 69.72 atoms - correct answer a) 6.02 x 10^23 atoms
What is the molar mass of dinitrogen trioxide?
[Molar masses (g/mol): N=14.01; O= 16.00]
a) 30.01 g/mol
b) 76.02 g/mol
c) 46.01 g/mol
