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Chemistry 101 Final Exam Ivy Tech Questions And Correct Answers

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  • Chemistry 101

Chemistry 101 Final Exam Ivy Tech Questions And Correct Answers What is the mass percent of hydrogen in water? a: 5.60 b: 11.2 c: 33.3 d: 88.8 - answerb 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 - answera ©SIRJOEL EXAM SOLUTIONS ...

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  • October 16, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Chemistry 101
  • Chemistry 101
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©SIRJOEL EXAM SOLUTIONS
10/14/2024 11:14 PM




Chemistry 101 Final Exam Ivy Tech
Questions And Correct Answers


What is the mass percent of hydrogen in water?




a: 5.60

b: 11.2

c: 33.3


d: 88.8 - answer✔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 - answer✔a

, ©SIRJOEL EXAM SOLUTIONS
10/14/2024 11:14 PM
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


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

, ©SIRJOEL EXAM SOLUTIONS
10/14/2024 11:14 PM
c: 6.022 × 10^23


d: 6.023 × 10^22 - answer✔c


The empirical formula for C6H6 is C3H3.




True


False - answer✔False


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

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