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Chemistry 101 Final Exam Ivy Tech Newest 2025/2026 Complete All 200 Questions And Correct Detailed Answers (Verified Answers) |Already Graded A+||Brand New Version!!
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 - ANSWER-b
What is the mass of 0.560 moles of chlorine gas?
a: 19.9
b: 39.7
c: 127
d: 63.3 - ANSWER-b 1 / 4
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How many molecules of nitrogen monoxide are in a 22.5 gram sample?
a: 4.51 × 10^23
b: 7.33 × 10^23
c: 4.06 × 10^23
d: 5.86 × 10^23 - ANSWER-a
How many molecules of sulfur trioxide are in 78.0 grams?
a: 5.87 × 10^23
b: 7.33 × 10^23
c: 0.974
d: 3.76 × 10^27 - ANSWER-a
In comparing 1 mole of carbon atoms to one mole of magnesium atoms, which statement is TRUE?
a: The mass of 1 mole of carbon is the same as the mass of 1
mole of magnesium. 2 / 4
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b: The mass of 1 mole of carbon is greater than the mass of 1
mole of magnesium.
c: There are more atoms in 1 mole of magnesium than in 1 mole
of carbon.
d: The mass of 1 mole of magnesium is greater than the mass of
- mole of carbon. - ANSWER-d
One mole of zinc contains 65.39 zinc atoms.
True False - ANSWER-False
The empirical formula mass is 18.0 and the molecular formula mass is 90, therefore n = 5.
True False - ANSWER-True
The molecular formula is equal to the empirical formula multiplied by a whole number integer.
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True False - ANSWER-True
C2H6O3 could be an empirical formula.
True False - ANSWER-True
C2H6O4 could be an empirical formula.
True False - ANSWER-False
What are the coefficients for the following reaction when it is properly balanced?
___O2 + ___CH4 → ___CO2 + ___H2O
a: 1, 3, 2, 1
b: 2, 1, 3, 1
c: 2, 3, 2, 2
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