Final Exam Review CHM130

Do you know my name?

100

N₄O₇

tetranitrogen heptoxide

200

What is name for:

a. O^2-

b. Ba²⁺

c. OH^-

a. oxide

b. barium ion

c. hydroxide 

300

1. give the formula for hydrobromic acid

2. What type of acid is this? How do you know?

1.HBr_(aq)

2. Binary acid, hydrogen + nonmetal

400

1. Give the name for H₃PO₄

What type of acid is this?

1. phosphoric acid

2. Ternary acid

500

Give the name and formula of the compound expected to form between:

a. Ca & NO3

b. Mn & O 

c. NH4 & CO3

a. calcium nitrate; Ca(NO₃)₂

b. manganese (II) oxide; MnO₂

c. ammonium carbonate; (NH₄)₂CO₃

How do you figure?

100

1. What are the full and condensed electron configurations for Tin? 

2. Draw the orbital diagram for the condensed configuration of Tin.  

Full: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p²

Condensed: [Kr]5s²4d¹⁰5p²

200

What is the molarity of a solution containing 15.6 g of KCl in 274 mL of KCl solution?

0.763 M 

300

How many mL of 2.50 M KOH will provide 25.0 g of KOH?

178mL

400

Using the following equation, how many mol of C₂H₂ are required to react completely with 7.50 mol O₂?

2C₂H₂(g) + 5O₂(g) --> 4CO₂(g) + 2H₂O(g)

3.00 mol C₂H₂

500

Draw the lewis dot structure and give the molecular geometry and shape for H₂S

tetrahedral, bent 

Balance Beam

100

Balance the equation and give the names for each reactant and product.

FeCl₃ + NaOH --> Fe(OH)₃ + NaCl

1,3,1,3

Reactants:iron(III) chloride & sodium hydroxide 

Products: iron(III) hydroxide, sodium chloride

200

1. __Mg(s) + __ HCl(aq) --> __ MgCl_2(aq) + __H_2(g)

2. What is oxidized and what is reduced?

1. 1, 2, 1, 1

2. Mg(s) is oxidized, H⁺ is reduced

300

Balance the reaction and determine the states of matter.

__NaCl_(?) + __Pb(NO₃)_2(?) --> __PbCl_2(?) + __NaNO_3(?)

2, 1, 1, 2

NaCl_(aq)

Pb(NO₃)_{2 (aq)}

PbCl_2(s)

NaNO_3(aq)

400

__C₆H₁₂O₆(l) + __O₂(g) -->  __CO₂(g) + __H₂O(g)

1, 6, 6, 6 

500

Predict the products and balance the full reaction:

__ZnBr₂ + __K₃PO₄ --> 

Products: KBr & Zn₃(PO₄)₂

3 ZnBr₂ + 2 K₃PO₄ --> 6 KBr + Zn₃(PO₄)₂

Do polar bears have moles?

100

Is the bond between sulfur and fluorine polar or nonpolar? Explain

polar 

200

Using the following equation, how many grams of O₂ are required to produce 4.60 mol H₂O?

2C₂H₂(g) + 5O₂(g) --> 4CO₂(g) + 2H₂O(g)

368 grams O₂

300

What is the molar mass of Al(OH)₃ ?

78.00 g/mol

400

How many formula units are contained in 2.68 mol Ca₃(PO₄)₂?

1.61 x 10²⁴ formula units

500

1. What is an IMF?

2. List the 5 IMF's in order of decreasing strength (highest to lowest) 

1. the force between neighboring molecules

2. Ion-ion > Ion-Dipole > Hydrogen bonding > Dipole-Dipole > London Dispersion

Know it all

100

A cup of hot chocolate has 140 kcals attributed to its sugar content.  What is the energy in kilojoules? (4.194 J = 1 calorie) 

580 kJ or 5.8 x 10²

200

1. Provide the definitions for Hund's Rule and Pauli Exclusion Principle.

2. Draw/Give an example of each to support your definition.

Hund's Rule: each orbital is filled with 1 electron before they are paired 

Pauli Exclusion Principle: electrons in the same orbital have opposite spin. 

300

Express 78.00 degrees celsius in Kelvin

351.15 Kelvin

400

1. Give the mass, charge, and location of each particle within the atom. 

a. Proton

b. Electron

c. Neutron

2. Which two particles contribute to the mass of an element?

1a. 1 amu, +1, nucleus

1b. negligible, -1, outside nucleus

1c. 1 amu, 0, nucleus

2. proton and neutron

500

What is the percent composition by mass of each element in (NH₄)₂S?

Molar Mass of C₂₇H₄₆O = 386 g/mol

N: 41.1%

H: 11.8%

S: 47.1%