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1.50 Significant Figures I - Finding the Significant Digits in a Number

When we write a number we identify certain digits as significant (meaningful or important) and other digits as not significant because they are simply placeholders for the decimal point.

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posted @ Monday, February 22, 2010 3:46 PM by Chemistry

1.51 Significant Figures II - Significant Figures in a X or ÷ Calculation

Significant Figures in a X or ÷ calculation. The rule for significant figures in a multiplication or
division calculation is simple. Find the number in the calculation with the LOWEST number of significant figures.

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posted @ Monday, February 22, 2010 3:54 PM by Chemistry

1.52 Significant Figures III - Significant Figures in a + or - Calculation

The rule for significant figures in an addition or subtraction calculation is a bit more complicated, because you ignore significant figures! Instead you look at how numbers line up with the decimal point.

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posted @ Monday, February 22, 2010 4:19 PM by Chemistry

1.53 Significant Figures IV - Significant Figures in Complicated Calculations

When there are several levels of calculations imbedded in parenthesis, you have to determine the significant figures within each parenthesis and work your way out to the final answer.

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posted @ Monday, February 22, 2010 4:26 PM by Chemistry

1.60 Dimensional Analysis I - Simple Unit Conversion

Learn more about simple unit conversion highlighting dimensional analysis.

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posted @ Monday, February 22, 2010 4:33 PM by Chemistry

1.61 Dimensional Analysis II - Unit Conversions Involving SI Unit Prefixes

Learn the steps how to convert units which include SI unit prefixes like identifying the starting and ending units and arranging the conversion factor in an equation.

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posted @ Monday, February 22, 2010 4:37 PM by Chemistry

1.62 Dimensional Analysis III - Unit Conversions with Two SI Prefixes

Go more in depth in dimensional analysis by learning how to convert units with two SI unit prefixes.

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posted @ Monday, February 22, 2010 4:40 PM by Chemistry

1.64 Dimensional Analysis IV - Combination Units

Learn how to combine units using the steps already covered with emphasis on step three, where you identify unit conversion factors for both the numerator and denominator of the unit.

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posted @ Monday, March 1, 2010 9:26 AM by Chemistry

1.65 Dimensional Analysis V - Combinations with Powers

Learn more about combinations with powers and try some practice problems.

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posted @ Monday, March 1, 2010 9:34 AM by Chemistry

2.81 Naming Compounds I - How to tell them apart

Identify the differences between compounds such as ionic, covalent, or acids from their formula

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posted @ Monday, March 1, 2010 9:46 AM by Chemistry

2.82 Naming Compounds - Formula to Name: Simple Ionic

Learn about type one of naming compounds, formula to name, simple ionic.

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posted @ Monday, March 1, 2010 9:51 AM by Chemistry

2.83 Naming Compounds - Formula to Name: Complicated Ionic

Delve into type two of naming compounds, formula to name, complicated ionic.

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posted @ Monday, March 1, 2010 10:38 AM by Chemistry

2.84 Naming Compounds - Formula to Name: Covalent

Learn about the third type of naming compounds, formula to name, covalent.

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posted @ Monday, March 1, 2010 10:42 AM by Chemistry

2.85 Naming Compounds - Formula to Name: Acids

Learn more about the topic of naming compounds, formula to name, and acids.

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posted @ Monday, March 1, 2010 10:45 AM by Chemistry

2.86 Naming Compounds - Name to Formula: Simple Ionic

Find out more on naming compounds, this time name to formula. This post is about type one, simple ionic.

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posted @ Monday, March 1, 2010 10:51 AM by Chemistry

2.87 Naming Compounds - Name to Formula: Complicated Ionic

Naming compounds - from name to formula using the second type, complicated ionic.

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posted @ Monday, March 1, 2010 11:02 AM by Chemistry

2.88 Naming Compounds - Name to Formula: Covalent

The third type of naming compounds, name to formula, covalent.

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posted @ Monday, March 1, 2010 11:04 AM by Chemistry

2.89 Naming Compounds - Name to Formula: Acids

Naming compounds that are acids, name to formula.

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posted @ Monday, March 1, 2010 11:07 AM by Chemistry

3.21 Moles: Using Avogadro's Number: Using Moles, Atomic Masses and Moler Masses

Find out more about using Moles, Atomic Masses and Molar Masses.

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posted @ Monday, March 1, 2010 11:19 AM by Chemistry

3.22 Using Avogadro's Number: Converting Between Moles and Numbers

Find out more about converting Between Moles and Numbers of Atoms or Molecules.

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posted @ Monday, March 1, 2010 11:23 AM by Chemistry

3.41 Percent Composition of Compounds

This post explains Percent Composition from a Molecular Formula.

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posted @ Monday, March 1, 2010 11:31 AM by Chemistry

3.51 Formula from Percent Composition: Given Mass and Percent

Formula from percent composition given molecular mass and percent composition.

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posted @ Monday, March 1, 2010 12:01 PM by Chemistry

3.52 Formula from Percent Composition: Given only Percent

Formula from percent composition given only percent composition.
 
 

posted @ Monday, March 1, 2010 11:51 AM by Chemistry

3.53 Formula from Percent Composition: Given Data from Composition Analysis

Learn more about formula to percent composition when given data from composition analysis.

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posted @ Monday, March 1, 2010 12:07 PM by Chemistry

3.71 Balancing Equations: Easy

Try balancing equations - here's the easy one.

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posted @ Monday, March 1, 2010 12:13 PM by Chemistry

3.72 Balancing Equations: Medium

Medium level of difficulty equations for you to balance.

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posted @ Monday, March 1, 2010 12:15 PM by Chemistry

3.73 Balancing Equations: Hard

The final type of balancing equations, hard for you to try.

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posted @ Monday, March 1, 2010 12:17 PM by Chemistry

3.81 Stoichiometric Problems - Relating Moles

Using the chemical equation to relate moles of one chemical to another.

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posted @ Monday, March 1, 2010 12:20 PM by Chemistry

3.82 Stoichiometric Problems - Relating to Grams

Using the chemical equation to relate grams of one chemical to another.

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posted @ Monday, March 1, 2010 12:22 PM by Chemistry

3.83 Stoichiometric Problems: Limiting Reactant Problems

Find out more about Stoichiometric problems including limiting reactant problems.

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posted @ Monday, March 1, 2010 12:26 PM by Chemistry

3.84 Stoichiometric Problems: Percent Yield

In this post, percent yield will be discussed in relations to stoichiometric problems.

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posted @ Monday, March 1, 2010 12:28 PM by Chemistry

4.31 Molarity Calculations: Basic

Learn more about basic calculations using molarity.

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posted @ Monday, March 1, 2010 12:32 PM by Chemistry

4.32 Molarity Calculations: Ionic Compounds

Find out more on molarity calculations inlcuding the molarity of ionic compounds.

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posted @ Monday, March 1, 2010 12:34 PM by Chemistry

4.33 Molarity Calculations: Other Calculations

Learn more about other calculations based on Molarity.

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posted @ Monday, March 1, 2010 12:36 PM by Chemistry

4.61 Chemical Equations for Aqueous Reactions

Learn how to write equations. Chemical equations for solution reactions can be written in three different forms; molecular equations, complete ionic equations, and net ionic equations. In class, so far, we have
been writing molecular equations.

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posted @ Monday, March 1, 2010 12:40 PM by Chemistry

4.91 Assigning Oxidation States

Find out more about assigning oxidation states. An oxidation state or oxidation number is a number that we assign to an element in a compound to show whether or not the element is missing electrons, has excess electrons, or has just as many electrons as it needs.

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posted @ Monday, March 1, 2010 12:42 PM by Chemistry

410 Balancing Oxidation/Reduction Equations

Find out more about Balancing Oxidation/Reduction Equations in this post. Basic conditions means that you have more OH- and very little H+ in your solution.

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posted @ Monday, March 1, 2010 1:06 PM by Chemistry

411 Balancing Oxidation/Reduction Equations

This post explains more about balancing oxidation and reduction equations. Balancing an oxidation-reduction reaction is a little simpler if the reaction is either neutral or acidic, and a little more difficult if the solution is basic.

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posted @ Monday, March 1, 2010 1:10 PM by Chemistry

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