1|Page
CHEMISTRY 101 FINAL EXAM IVY TECH NEWEST 2025/2026 ACTUAL
EXAM WITH COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS (100% VERIFIED ANSWERS) |ALREADY GRADED A+|
||PROFESSOR VERIFIED||
How many atoms are in 5.80 moles of He?
a: 3.49 × 10^24
b: 6.02 × 10^23
c: 1.03 × 10^23
d: 4.00 - ANSWER-a
What is the value of n when the empirical formula is C3H5 and
the molecular mass is 205.4 g/mol?
a: 10
b: 0.02
c: 140
d: 5 - ANSWER-d
,2|Page
How many atoms are in 15.6 grams of silicon?
a: 0.555
b: 3.34 × 10^23
c: 2.64 × 10^26
d: 438 - ANSWER-b
What is the correct value for Avogadro's number?
a: 6.022 × 10^2.3
b: 6.022 × 10^33
c: 6.022 × 10^23
d: 6.023 × 10^22 - ANSWER-c
The empirical formula for C6H6 is C3H3.
True
False - ANSWER-False
, 3|Page
Water is 11.2% hydrogen by mass.
True
False - ANSWER-True
One mole of CO2 gas contains 1 mole of carbon atoms and 2
moles of oxygen atoms.
True
False - ANSWER-True
Avogadro's Number is 6.022 × 1023.
True
False - ANSWER-True
A 500. gram iron ore sample was determined to contain 242
grams of iron. What is the mass percent of iron in the ore?
CHEMISTRY 101 FINAL EXAM IVY TECH NEWEST 2025/2026 ACTUAL
EXAM WITH COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS (100% VERIFIED ANSWERS) |ALREADY GRADED A+|
||PROFESSOR VERIFIED||
How many atoms are in 5.80 moles of He?
a: 3.49 × 10^24
b: 6.02 × 10^23
c: 1.03 × 10^23
d: 4.00 - ANSWER-a
What is the value of n when the empirical formula is C3H5 and
the molecular mass is 205.4 g/mol?
a: 10
b: 0.02
c: 140
d: 5 - ANSWER-d
,2|Page
How many atoms are in 15.6 grams of silicon?
a: 0.555
b: 3.34 × 10^23
c: 2.64 × 10^26
d: 438 - ANSWER-b
What is the correct value for Avogadro's number?
a: 6.022 × 10^2.3
b: 6.022 × 10^33
c: 6.022 × 10^23
d: 6.023 × 10^22 - ANSWER-c
The empirical formula for C6H6 is C3H3.
True
False - ANSWER-False
, 3|Page
Water is 11.2% hydrogen by mass.
True
False - ANSWER-True
One mole of CO2 gas contains 1 mole of carbon atoms and 2
moles of oxygen atoms.
True
False - ANSWER-True
Avogadro's Number is 6.022 × 1023.
True
False - ANSWER-True
A 500. gram iron ore sample was determined to contain 242
grams of iron. What is the mass percent of iron in the ore?