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Balance Beam
Do polar bears have moles?
Know it all
100

N4O7

tetranitrogen heptoxide

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


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


100

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

polar 

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

What is name for:

a. O2-

b. Ba2+

c. OH-

a. oxide

b. barium ion

c. hydroxide 

200

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

0.763 M 

200

1. __Mg(s) + __ HCl(aq) --> __ MgCl2(aq) + __H2(g)

2. What is oxidized and what is reduced?

1. 1, 2, 1, 1

2. Mg(s) is oxidized, H+ is reduced

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

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

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

300

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

178mL

300

Balance the reaction and determine the states of matter.

__NaCl(?) + __Pb(NO3)2(?) --> __PbCl2(?) + __NaNO3(?)

2, 1, 1, 2

NaCl(aq)

Pb(NO3)2 (aq)

PbCl2(s)

NaNO3(aq)
300

What is the molar mass of Al(OH)3 ?

78.00 g/mol

300

Express 78.00 degrees celsius in Kelvin

351.15 Kelvin

400

1. Give the name for H3PO4

What type of acid is this?

1. phosphoric acid

2. Ternary acid

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

400

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

1, 6, 6, 6 

400

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

1.61 x 1024 formula units

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

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

500

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

tetrahedral, bent 

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

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

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% 

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