The Mole and Avogadro s Number

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The Mole & Avogadro

The Mole & Avogadro. Y11 DP Chemistry R. Slider. Relative Atomic Mass. As you know, atoms are very, very small…. Some single atom masses: Li: 1.15217 x 10 -23 g O: 2.65659 x 10 -23 g He: 6.64605 x 10 -24 g U: 3.95233 x 10 -22 g.

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IB Topic 1: Quantitative Chemistry 1.1: The mole concept and Avogadro s number

2. Pre-IB Info: Naming Compounds and Writing Formulas . Inorganic Ionic CompoundsNaming: Ionic compounds consist of a positive ion (metal or NH4 (ammonium)) and a negative ion (nonmetal or polyatomic ion). Identify the two ions and name them.CaSO4: Calcium sulfateNa2S: Sodium sulfideFe(NO3)3

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Avogadro s Law

2. P a 1/V. P x V = constant. P1 x V1 = P2 x V2. Boyle's Law. Constant temperatureConstant amount of gas. 3. A sample of chlorine gas occupies a volume of 946 mL at a pressure of 726 mmHg. What is the pressure of the gas (in mmHg) if the volume is reduced at constant temperature to 154 mL?. P1 x V1 = P2 x V2.

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Amedeo Avogadro

Amedeo Avogadro. In order to state that equal volumes of all gases at the same temperature and pressure contain the same number of molecules, Amedeo Avogadro used the ideas of Gay-Lussac in the year 1811. Avogadro's Principle.

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Approximating the derivatives

Approximating the derivatives. Numerical ODE (1D). Initial Value Problem:. Example:. Approximate . Numerical ODE (1D). Example:. Approximate . Forward Euler Method. Forward Euler Method. Example:. Numerical ODE (1D). Example:. function [xi,ti]=feuler(t0,T,n,xi_0) k=(T-t0)/n;

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Amedeo Avogadro

Amedeo Avogadro. By: Kyle LaBrosse. Personal Background. Was born June 9, 1776 in Turin Italy He was a son of a lawyer and Senator and was expected to have a career in politics Earned a doctorate in law and worked as a lawyer for 3 years.

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Approximating Area

Approximating Area. Sigma Notation. Used to show the sum of a series of numbers. Summation Formulas. Evaluate the sum for n=5. Evaluate the sum for n=100, 1000, & 10000. Evaluate the sum for n=10, 100, 1000. Approximating Area – Left Sum. Approximating Area – Right Sum.

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Approximating Euler Paths

When an Euler path is impossible, we can get an approximate path In the approximate path, some edges will need to be retraced An optimal approximation of a Euler path is a path with the minimum number of edge retraces. Approximating Euler Paths.

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Approximating Roots

Approximating Roots. Units 1.12 & 1.13. Approximating Square Roots: Numbers that are not perfect squares do not have integer square roots. You can use perfect squares to approximate the square root of a number that is not a perfect square.

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Approximating Market Equilibria

Approximating Market Equilibria. Kamal Jain, Microsoft Research Mohammad Mahdian, MIT Amin Saberi, Georgia Tech. Background. Consider a market consisting of n agents trading m types of divisible goods . The amount of good j that agent i initially has is w i j .

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Approximating complete partitions

Approximating complete partitions. Guy Kortsarz Joint work with J. Radhakrishnan and S.Sivasubramanian. Problem Definitions. A disjoint partition of the vertices of a graph is complete if every share an edge The Complete partition problem: Given a graph G

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Avogadro and the Mole

Avogadro and the Mole. HIGHER GRADE CHEMISTRY CALCULATIONS. Avogadro’s constant is the number of ‘elementary particles’ in one mole of a substance. It has the value of 6.02 x 10 23 mol -1. Worked example 1. Calculate the number of atoms in 4 g of bromine. Avogadro and the Mole.

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Avogadro and the Mole

Avogadro and the Mole. Amadeo Avogadro 1776-1856. Italian lawyer turned scientist Famous for proposing that equal volumes of gases held at same temperature and pressure must have the same number of gas particles (Avogadro’s Hypothesis-1811)

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Approximating Power Indices

Approximating Power Indices. Yoram Bachrach(Hebew University) Evangelos Markakis(CWI) Ariel D. Procaccia (Hebrew University) Jeffrey S. Rosenschein (Hebrew University) Amin Saberi (Stanford University). Outline. Power indices Weighted Voting Games

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Approximating Radio Maps

Approximating Radio Maps. Boaz Ben-Moshe (SFU). Talk outline. Definition, Motivation Known methods New Radar like Algorithm Experimental results Future work. Approximating Radio Maps. Goal: Given an antenna (on a terrain T)

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Amedeo Avogadro

Amedeo Avogadro. Avogadro was born in Turin from a noble family in 1776. He dedicated himself to physics and mathematics , then called positive philosophy. In 1809 he started teaching them at a “ Liceo " high school in Vercelli, where his family lived and had some property.

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Approximating complete partitions

Approximating complete partitions. Guy Kortsarz Joint work with J. Radhakrishnan and S.Sivasubramanian. Problem Definitions. A disjoint partition of the vertices of a graph is complete if every share an edge The Complete partition problem: Given a graph G

248 views • 22 slides