Chemistry 101 Final Exam Ivy Tech questions \| \| \| \| \| \| \|
with answers \|
What is the mass percent of hydrogen in water?
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a: 5.60
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b: 11.2
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c: 33.3
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d: 88.8 - CORRECT ANSWERS ✔✔b
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How many atoms are in 5.80 moles of He?
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a: 3.49 × 10^24
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b: 6.02 × 10^23
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c: 1.03 × 10^23
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d: 4.00 - CORRECT ANSWERS ✔✔a
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What is the value of n when the empirical formula is C3H5 and
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the molecular mass is 205.4 g/mol?
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a: 10
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b: 0.02
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c: 140
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,d: 5 - CORRECT ANSWERS ✔✔d
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How many atoms are in 15.6 grams of silicon?
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a: 0.555
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b: 3.34 × 10^23
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c: 2.64 × 10^26
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d: 438 - CORRECT ANSWERS ✔✔b
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What is the correct value for Avogadro's number?
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a: 6.022 × 10^2.3
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b: 6.022 × 10^33
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c: 6.022 × 10^23
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d: 6.023 × 10^22 - CORRECT ANSWERS ✔✔c
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The empirical formula for C6H6 is C3H3.
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True \|
False - CORRECT ANSWERS ✔✔False
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Water is 11.2% hydrogen by mass.
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True
, False - CORRECT ANSWERS ✔✔True
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One mole of CO2 gas contains 1 mole of carbon atoms and 2
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moles of oxygen atoms.
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True \|
False - CORRECT ANSWERS ✔✔True
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Avogadro's Number is 6.022 × 1023. \| \| \| \| \|
True
False - CORRECT ANSWERS ✔✔True
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A 500. gram iron ore sample was determined to contain 242
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grams of iron. What is the mass percent of iron in the ore?
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a: 32.6
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b: 48.4
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c: 51.6
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d: 93.7 - CORRECT ANSWERS ✔✔b
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What is the mass of 0.560 moles of chlorine gas?
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a: 19.9
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b: 39.7
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with answers \|
What is the mass percent of hydrogen in water?
\| \| \| \| \| \| \| \|
a: 5.60
\|
b: 11.2
\|
c: 33.3
\|
d: 88.8 - CORRECT ANSWERS ✔✔b
\| \| \| \| \|
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 - CORRECT ANSWERS ✔✔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 - CORRECT ANSWERS ✔✔d
\| \| \| \| \|
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 - CORRECT ANSWERS ✔✔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 - CORRECT ANSWERS ✔✔c
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The empirical formula for C6H6 is C3H3.
\| \| \| \| \| \|
True \|
False - CORRECT ANSWERS ✔✔False
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Water is 11.2% hydrogen by mass.
\| \| \| \| \|
True
, False - CORRECT ANSWERS ✔✔True
\| \| \| \|
One mole of CO2 gas contains 1 mole of carbon atoms and 2
\| \| \| \| \| \| \| \| \| \| \| \| \|
moles of oxygen atoms.
\| \| \|
True \|
False - CORRECT ANSWERS ✔✔True
\| \| \| \|
Avogadro's Number is 6.022 × 1023. \| \| \| \| \|
True
False - CORRECT ANSWERS ✔✔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?
\| \| \| \| \| \| \| \| \| \| \| \|
a: 32.6
\|
b: 48.4
\|
c: 51.6
\|
d: 93.7 - CORRECT ANSWERS ✔✔b
\| \| \| \| \|
What is the mass of 0.560 moles of chlorine gas?
\| \| \| \| \| \| \| \| \|
a: 19.9
\|
b: 39.7
\|
