Chemistry FINAL EXAM Review

Question 1

Which of the following is the correct name for N2I5?

Accepted Answer

dinitrogen pentiodide

Question 2

Which of the following is an ionic compound?

Accepted Answer

Al2O3

Question 3

How many protons, neutrons, and electrons does Phosphorus-32 have?

Accepted Answer

15, 17, 15

Question 4

According to VSEPR Theory, molecules adjust their shapes to keep what as far apart as possible?

Accepted Answer

pairs of valence electrons

Question 5

What holds water molecules together in the liquid state?

Accepted Answer

hydrogen bonds

Question 6

What is the molar mass of AuCl3?

Accepted Answer

303.32 g

Question 7

When a catalyst is added to a reaction it ___ the reaction rate by ___.

Accepted Answer

increases; lowering the activation energy

Question 8

Which of the following is a molecular compound?

Accepted Answer

SO2

Question 9

How many moles of tungsten atoms are in 4.8 X 1025 atoms of tungsten?

Accepted Answer

7.97 X 101 moles

Question 10

What is the number of moles in 500 L of He gas at STP?

Accepted Answer

22.32 mol

Question 11

What is the mass, in grams, of 5.90 moles C8H18?

Accepted Answer

674.13 g

Question 12

Which statement correctly describes the reaction?

Accepted Answer

endothermic, energy is absorbed

Question 13

What is the correct formula for Calcium nitride?

Accepted Answer

Ca3N2

Question 14

How many protons, neutrons, and electrons does Argon have?

Accepted Answer

18, 22, 18

Questions 14