CHM 113 EXAM STUDY SHEET COMPLETE QUESTIONS ACCURATE SOLUTIONS

CHM 113 EXAM STUDY SHEET COMPLETE QUESTIONS ACCURATE SOLUTIONS
CHM 113 TEST BANK 2026/2027 EXAM Review
WITH Questions and Answers Verified Solutions
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Question:
Predict the chemical formula for the ionic compound formed by Cu²■ and P³■.

Answer:
Cu3P2



Question:
Balance the following chemical equation (if necessary): MnO2 (s) + HCl (aq) -> MnCl2 (aq) + H2O
(l) + Cl2 (g).

Answer:
MnO2 (s) + 4 HCl (aq) -> MnCl2 (aq) + 2 H2O (l) + Cl2 (g)



Question:
The following picture would be best described as.

Answer:
A gaseous compound



Question:
Which of the following is a physical change.

Answer:
Tearing a piece of paper



Question:

, What is the mass number for an atom of zinc containing 30 protons and 36 neutrons.

Answer:
66



Question:
What is the mass percentage of Na in NaNO■? Provide an answer to two decimal places.

Answer:
27.04%



Question:
A chemist encounters an unknown metal. They drop the metal into a graduated cylinder containing
water, and find the volume change is 4.1 mL. If the metal weighs 5.1 g, what is the density of the
metal in g/mL.

Answer:
1.2 g/mL



Question:
In the reaction between HNO■ and Ba(OH)■ (assume complete reaction of the Ba(OH)■), the
spectator ions are A) Ba²■ and NO■■ B) H■ and NO■■ C) H■ and OH■ D) Ba²■ and OH■.

Answer:
A) Ba²■ and NO■■



Question:
An unknown element X has the following isotopes: ²■X (80.50% abundant, mass = 25.03 amu) and
²■X (19.50% abundant, mass = 26.98 amu). What is the average atomic mass of X in amu.

Answer:
25.40 amu