of substance mole mol Electric Current ampere A Luminous Intensity candela cd Prefixes for Units giga- G 109 mega- M 106 kilo- k 103 deci- d 10-1 centi- c 10-2 milli- m 10-3 micro- u 10-6 nano- n 10-9 pico- p 10-12 femto- f 10-15 atto- a 10-18 B. The mole and millimole 1. Mole – amount of a chemical species. Avogadro’s number 6.022 X 1023 of particles. 2. Millimole – 1mmol = 10-3 mol 3. Molar mass – mass in grams of one mole of a substance
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1 mole of any substance can be defined as: Amount of a substance that contains as many particles (atoms‚ molecules or ions) as there are atoms in 12 g of the 12C isotope Avogadro number or Avogadro constant (NA); equal to 6.022 × 1023 particles Example − 1 mole of oxygen atoms = 6.022 × 1023 atoms 1 mole of carbon dioxide molecules = 6.022 × 1023 molecules 1 mole of sodium chloride = 6.022 × 1023 formula units of sodium chloride Molar mass of a substance can be defined as: Mass of one mole
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Shawn Dubbs Lab 1 The Mole Concept of and the Chemical Formula of a Hydrate Abstract: The objective of this lab was to conduct an experiment to analyze the molar components in alum. This was conducted by heating the alum till the water had evaporated and then determining the number of moles for each component. Then using the these amounts to figure out the empirical formula for alum. Results: In order to determine how much of each separate component a total mass was taken before hand for
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of each element in BaCo3‚ assume we have 1 mole of BaCo3‚ we have M(Baco3)g=137.3+12.0+3x16.0=197.3g/mol so we have 197.3g Baco3 so 1mol of Ba=…… 8. %element=m(element)/m(compound)x100% 9. Empirical formula-----simplest whole number ratio Metallic elements and ionic substances--- EF=formula Covalent substances---EF may be the same or simple whole number ratio of the empirical formula. 10. mass(g) m/M moles(mol) divide by smallest simplest mole ratio-----EF 11. If it doesn’t give the exact
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lab we took Fe(NO3)3 and NaOH and mixed 7 different mole ratios in graduated cylinders to determine what the mole ratio is. We also did the same thing with solutions of CuCl2 and Na3PO4. We determine the mole ratios by graphing the volume of reactant #1 vs. volume of precipitate for each reaction. Data Part 1.) Cylinder 1 2 3 4 5 6 7 Fe(NO3)3‚ 0.1 M‚ ml 5 10 12 15 17 20 24 NaOH‚ 0.1 M‚ ml 55 50 48 45 43 40 36 Fe:OH mole ratio 1:11 1:5 1:4 1:3 2:5 1:2 2:3 Volume Precipitate
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Name Mole Lab Exercises I. Pre Lab Questions Answer the following questions. (Hint: Your textbook will be helpful.) 1. ‘s number is the number of carbon atoms that are present in 12 g of 12C. 2. How many molecules of a compound are in one mole of that compound? 3. Write out the formula for finding percent by mass. 4. Write out the formula for finding Molarity. 5. The Formula Weight of a compound is equal to mole of that compound.
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her she was just writing in her diary like she always did. The Diary of Anne Frank tells Anne’s story while she was in hiding from Nazi oppression with her family during World War Two. The diary is admired by so many people because of it’s purity and abundance of raw emotions. The purpose of The Diary of Anne Frank was for Anne’s enjoyment at first‚ she explains that she wouldn’t have been able to survive without writing in her diary. Little did Anne know that her diary would someday be cherished and
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Submitted by: Elisha Charity B. Hermoso Submitted to: Mrs. Madeleine Marasigan 1. Summary: Adrian Monk was a good and talented detective. He was a police detective at San Francisco until his wife Trudy was killed in a car bombing incident. This led him to a nervous breakdown and got him discharged from his department. In all the cases he solved‚ it was only his wife that he was not able solve. He did not go out of his house for three and a half years. Sharona Fleming a nurse and an assistant
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Adrian Sutherland was born on November 29‚ 1976 in Moose Factory‚ Ontario. Adrian is a role model because he is caring‚ a traditional knowledge keeper‚ and hardworking. When Adrian was a child‚ he grew up and lived in Attawapiskat‚ Ontario. When he was about 5 years‚ old he lived with his mother in a small house. He taught himself how to hunt by watching others when he would go hunting with relatives. Growing up‚ at the time‚ his family did not have any running water. They would drink water and
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The Diary of Anne Frank ! This summer I read The Diary of Anne Frank. This book was a diary written by Anne Frank who was a young Jewish girl living during the German occupation of Holland‚ and was translated by B.M. Mooyaart-Doubleday. In her diary she writes about what her and her mother‚ father‚ and older sister Margot went through because of their culture and beliefs. In 1942‚ Anne and her family went into hiding to avoid being sent to a concentration camp by the Nazi’s. !
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