Chem 111 General Chemistry 1 Practice Test #3 (Chapter 6 & 7) 50 Questions with Verified Answers,100% CORRECT
0 view 0 purchase
Course
Chem 111 General Chemistry 1 Practice
Institution
Chem 111 General Chemistry 1 Practice
Chem 111 General Chemistry 1 Practice Test #3 (Chapter 6 & 7) 50 Questions with Verified Answers
1. Which one of the following statements about balanced equations is TRUE? A reaction is balanced by
A) multiplying by suitable coefficients
B) changing the formula of the molecule
C) cha...
Chem 111 General Chemistry 1 Practice Test #3 (Chapter 6
& 7) 50 Questions with Verified Answers
1. Which one of the following statements about balanced equations is TRUE? A
reaction is balanced by
A) multiplying by suitable coefficients
B) changing the formula of the molecule
C) changing the charge of an ion
D) rearranging atoms in a molecule - CORRECT ANSWER A) multiplying by suitable
coefficients
2. What is the stoichiometric coefficient for oxygen when the following equation
is balanced using the lowest, whole-number coefficients?
_____ C₃H₈O(l) + ____ O₂(g) → CO₂(g) + ____H₂O(l)
A) 7
B) 5
C) 9
D) 3 - CORRECT ANSWER C) 9
3. Given the chemical equation: N₂ + 3 H₂ → 2 NH₃. On a MICROSCOPIC level,
what do the coefficients mean?
A) 28g of nitrogen reacts with 6g of hydrogen to give 34g of ammonia
B) 1 atom of nitrogen reacts with 3 atoms of hydrogen to give 2 atoms of
ammonia
, C) 1 molecule of nitrogen reacts with 3 molecules of hydrogen to give 2 molecules
of ammonia
D) 1 mole of nitrogen reacts with 3 moles of hydrogen to give 2 moles of
ammonia - CORRECT ANSWER C) 1 molecule of nitrogen reacts with 3 molecules
of hydrogen to give 2 molecules of ammonia
4. Given the chemical equation: N₂ + 3 H₂ → 2 NH₃. On a MACROSCOPIC level,
what do the coefficients mean?
A) 1 molecule of nitrogen reacts with 3 molecules of hydrogen to give 2 molecules
of ammonia
B) 1 mole of nitrogen reacts with 3 moles of hydrogen to give 2 moles of ammonia
C) 1 atom of nitrogen reacts with 3 atoms of hydrogen to give 2 atoms of
ammonia
D) all of the above - CORRECT ANSWER B) 1 mole of nitrogen reacts with 3 moles
of hydrogen to give 2 moles of ammonia
5. 1.00 mole of O₂ contains the same number of molecules as:
A) 0.667 mole of O₃
B) 2.00 mole of CH₃CO₂OH
C) 1.00 mole of CH₃CO₂H
D) all of the above - CORRECT ANSWER C) 1.00 mole of CH₃CO₂H
6. What is the molar mass of aspartic acid, C₄O₄H₇N?
A) 197g/mol
B) 133g/mol
C) 70g/mol
D) 43g/mol - CORRECT ANSWER B) 133g/mol
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller paulhans. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.99. You're not tied to anything after your purchase.
