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Analytical chemistry

inorganic chemistry lab report : titration

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Chemistry
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Household chemicals
Bases
Titration
Analytical chemistry
Acetates
Acetic acid
Acid–base titration
Vinegar
Dilution
Acid
Standard solution
Molar concentration

1 Experiment 6: Acid-Base Titration Objective: The objective of this experiment is to determine the percent mass of Acetic Acid in the vinegar (original Acetic Acid) by reacting measured volume of NaOH solution, whose concentration is given by react with standard HCl solution, with measured volume of dilute Acetic Acid solution. In addition, Excel is used in calculation part. Method:

inorganic chemistry lab report: titration

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Chemistry
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Household chemicals
Bases
Titration
Analytical chemistry
Acetates
Acetic acid
Acid–base titration
Vinegar
Dilution
Acid
Standard solution
Molar concentration

1 Experiment 6: Acid-Base Titration Objective: The objective of this experiment is to determine the percent mass of Acetic Acid in the vinegar (original Acetic Acid) by reacting measured volume of NaOH solution, whose concentration is given by react with standard HCl solution, with measured volume of dilute Acetic Acid solution. In addition, Excel is used in calculation part. Method:

inorganic chemistry lab report: Physical Properties

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Chemistry
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Laboratory techniques
Transparent materials
Analytical chemistry
Phase transitions
Separation processes
Filtration
Properties of water
solubility
Sand
Glass
Polyethylene terephthalate
Water filter

1 Experiment 3: Physical Properties Objective: The objective of this experiment is to separate Sand, Potassium Nitrate, and Blue Impurity from the mixture base on different physical properties of these matters. Also, filtration and fractional crystallization are used to complete the procedure. Method:

inorganic chemistry lab report: Water Hydration

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Chemistry
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Chemical properties
Analytical chemistry
Laboratory equipment
Mass
Crucible
Molar mass
Mole
Molar concentration
Mass fraction
Hydrate
Gas constant

1 Experiment 4: Water Hydration Objective: The objective of this experiment is to determine the formula of the hydrate and the percent water in the hydrate by heating the hydrate and dry out the water and determine the mole of water and anhydrate in the hydrate. Method:

Principles of Chemistry I Chapter 3

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Chemistry
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Analytical chemistry
Empirical formula
Stoichiometry
Limiting reagent
Molar concentration
Mole
Molar mass
Amount of substance
C18H37NO2
C10H12O4

Chapter 3 ? Stoichiometry this term refers to mass relationships and changes during a chemical reaction. Mass is conserved, but atoms in product are arranged differently than they are reactants. I) Mole ? A) molecules composed of atoms in definite proportion by mass and in specific ratio: butyric acid has 54.5% C, 36.4% O and 9.1 % H it also has the atoms C/H/O in the ratio 2/4/1 B) Mole is used as a measure of the amount of a substance. 1 mole is the number of 126C atoms in 12.00 g Notice it relates number of atoms to mass of those atoms in grams. It is always 6.02 x 1023 So 6.02 x 1023 atoms of 12C weigh 12.00 g Instead of looking at masses of isotopes, can use average atomic mass of atoms: Find Se on periodic table

Principles of Chemistry Chapter 3

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Chemistry
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Chemical properties
Solutions
Equilibrium chemistry
Physical chemistry
Analytical chemistry
Stoichiometry
Dissociation
Aqueous solution
Chemical equation
Mole
solubility
Molar concentration

Chapter 3: Molecules and Chem Equations Section 3.2: Chemical Formulas and Equations Monday, September 8, 2014 2:44 PM Chemical Equations: symbolic representation of a chemical reaction Left side: reactants (original materials) Right side: products (compounds formed from reaction) ? Notation: Reaction w/ heat is indicated by delta Reaction w/ light energy is indicated by hv (called a photochemical reaction) ? Hints: Balance elements that occur in only one compound on each side first Balance free elements last Balance polyatomic ions as groups ? Balancing Chemical Equations Remember LAW OF CONSERVATION OF MATTER Stoichiometry: study of relationships between reactants and products in a chemical reaction (numbers in chem equations are stoichiometric coefficients) ?

Chapter 5b

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Chemistry
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Chemistry
Bases
Analytical chemistry
Chemical compounds
Chlorides
Metal halides
Titration
Silver chloride
Stoichiometry
Molar concentration
Potassium hydroxide
health
behavior
Human development
Interpersonal relationships
Love
Psychoanalysis
Human behavior
Attachment theory
Evolutionary biology
Personal life
Technology

Chemistry 1210: Introduction to General Chemistry Dr. Gina M. Florio 27 Sept. 2012 Jespersen, Brady, Hyslop Chapter 5B Molecular View of Reactions in Aqueous Solution Properties of Solutions: Quantitative Composition The molar concentration or molarity (M) is defined as: units of M = mol/L (mol L-1) Example: How many grams of AgNO3 are needed to prepare 250 mL of a 0.0125 M AgNO3 solution? NOTE: You can also solve this for concentration OR liters of solution CH. 5 Properties of Solutions: Quantitative Composition Solutions of high concentration can be diluted to make solutions of lower concentration. Dilution: CH. 5 Example: How much 1.0 M CuSO4 (aq) solution is required to prepare 250 mL of a 0.10 M CuSO4 (aq) solution? How much water is required? Solution Stoichiometry CH. 5

Chapter 3

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Chemistry
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Chemistry
SI base units
Mass
Chemical properties
Analytical chemistry
Molar mass
Mass fraction
Mass spectrometry
Mole
Kilogram
Molecular mass
Molar volume

Chapter 3.1 Average mass= total mass/ number of objects massed 3.2 Mass spectrometer- most accurate method currently availbe for comparing masses of atoms 3.3 Avogadro?s number- 6.022X 10^23 = one mole of something Molar mass- mass in grams of one mole of the compound g/mol Find on periodic table 3.5 Percent comp: Mass/ weight percent= (Mass of element in compound/ mass of compound)X100 3.6 Molecular formula= (empirical formula)n N is an integer To find molec formula take molar mass/ empirical formula mass and that is n SEE PAGE 96 IF CONFUSED
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AP Bio: Potato Osmosis Lab Report

Subject: 
Biology
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Chemistry
Analytical chemistry
Chemical properties
Sweeteners
Physical chemistry
Solution
Sucrose
Osmosis
Molar concentration
Potato
concentration
Mass
#AP Biology #AP Bio #Biology

As visible from the data presented in the table and graph, the mass change in percent seems to decrease as the sucrose concentration increases. There seems to be minimal percent change of mass between 0.7M and 0.8M. Conclusions/Discussion After carefully recording data, we extrapolated that there is an inverse relationship between sucrose concentration and mass change. The inverse relationship is that as sucrose concentration increases, the mass change will decrease. By the conclusion, it was also concluded that the color-coded solutions had molarities of: Yellow= 0.2M Blue= 0.4M Clear= 0.6 Pink= 0.8M Green= 1M The hypothesis was supported by this conclusion.

AP Chemistry Lab: Determination of the Empirical Formula of Magnesium Oxide

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Chemistry
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Chemistry
matter
Chemical elements
Magnesium
Analytical chemistry
Crucible
Laboratory equipment
Oxygen
Oxide
Mole
health

Conclusion 1) One error could be if the Magnesium did not heat all the way, then there were still solid pieces of Magnesium that could have made the mass greater. Extra mass in the crucible could cause the oxygen to be too low because extra mass would consume more space and would lessen the amount of space for oxygen within the crucible. 2) a. If you put more water in to the crucible than is needed for reaction 3, and did not wait for the excess water to dry out, then there would be to little oxygen. This is because the product in the crucible and the water would increase the amount of weight of the crucible/product as a whole and would leave little space for oxygen.

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