Final Review

Stoich/Mass to moles to items

100

How many moles are present in 99.3 grams of aluminum oxide?

9.74 mol

200

What is the weight of 9.22 x 10²⁵ molecules of ammonium carbonate?

1.47 x 10⁴

300

Using the reaction 2H₂ + O₂ -> 2H₂O, how many moles of water would be produced from 3 moles of oxygen gas?

6.00 mol O₂

500

Using the reaction 4Fe + 3O₂ -> 2Fe₂O₃, how many grams of iron (III) oxide result from 75 grams of iron?

53.6 g of Fe

pH Calculations

100

Determine the [H⁺] of a solution that has a pH of 7.99.

1.02 x 10^-8

200

Calculate the pOH of a solution that contains an [OH^-] of 1.73 x 10^-8.

7.8, acidic

300

Determine if the pH of a solution with an [H⁺] of 1.56 x 10^-3.

2.81, acidic

400

The pOH of a solution is 4.75. Determine the [H⁺].

5.62 x 10^-10

500

A solution has an [OH^-] of 2.5 x 10^-4. Is the pH acidic or basic?

Basic. The pH is 10.4.

Matter + Sub-atomic Particles

100

What type of matter is NCl₃?

Ionic compound

200

The air we breathe is an example of what type of matter?

Homogenous mixture

300

How many protons are in a Sn-118 isotope?

50

400

How many electrons are in a cesium ion?

54

500

Determine the protons, neutrons, and electrons of a Cobalt-60 isotope.

27, 33, 27

Conjugating Acid/Base + Acid Nomenclature

100

Conjugate ammonium as a base.

NH₃

200

Is O^-2/H₂O an acid base pair?

No

300

What is the formula of nitrous acid?

HNO₂

400

Determine the name for H₂S.

Hydrosulfuric acid

500

What is the formula for hypochlorous acid?

HClO

Lewis Structures

100

How do we find valence electrons?

The groups on the periodic table (1A, 2A, 3A, etc.)

200

What is the VSPER formula of SO₂?

3,2,1

300

Determine the molecular geometry of CF₄

Tetrahedral

400

Find the polarity of PCl₃

Polar

500

Determine the molecular geometry and polarity of CH₂Cl₂.

Tetrahedral, Polar