Dont Make This Mistake in French Je Suis 25 Ans

If you are 25 years old  and someone asks you in French how old you are, you respond:  Jai 25 ans (I am 25 years old).  Using the verb avoir (to have)  for age is the idiom, and to respond using the verb à ªtre (Je suis 25 ans) is nonsense to the French ear.  Ã‚   The French translation of to be is à ªtre. However, a lot of English expressions with to be are equivalent to French expressions with avoir (to have). To be ___ (years old) is one of these expressions: I am 25 (years old) is not Je suis 25 or Je suis 25 ans, but rather Jai 25 ans. This is just something you have to memorize, along with Jai chaud (Im hot), Jai faim (Im hungry), and many more expressions with avoir. Note also that the word ans (years) is required in French. In English you can just say Im 25,but that does not happen in French. Plus, the number is always written as a numeral, never as a word. Other Expressions of Age à   trois ans  Ã‚  at three (years of age)On fà ªte ses vingt ans. Were celebrating his twentieth birthday.un enfant de cinq ans  Ã‚  a five-year-old childretraite à   60 retirement at the age of 60moins de 26 ans younger than 26Anne Jones, 12 ans Anne Jones, age 12les enfants de 3 à   13  ans children ages 3 to 13Le groupe tà ©moin a comportà © 30 sujets, à ¢ge moyen de 56,9 ans.  Ã‚  The control group consisted of 30 healthy individuals, mean  age  56.9.à ¢gà © de plus de 18  ans older than 18 / 18 years of ageJai une excellente bouteille dOban  18 ans dà ¢ge  dans mon bureau.  Ã‚  I have an excellent bottle of  18-year-old  Oban in my office.La principale à ©tude comprenait environ 19,000 femmes à ¢gà ©es de 15 à   25  ans.   The main study involved almost 19,000 women from  15 to  25. More Idiomatic Expressions with Avoir avoir à  Ã‚  Ã‚   infinitive  Ã‚  to have to do somethingavoir besoin de   to needavoir chaud   to be hotavoir confiance en   to trustavoir de la chance   to be luckyavoir du charme   to have charmavoir du chien  (informal)  Ã‚  to be attractive, have a certain somethingavoir du pain sur la planche  (informal)  Ã‚  to have a lot to do, have a lot on ones plateavoir du pot  (informal)  Ã‚  to be luckyavoir envie de   to want  toavoir faim   to be hungryavoir froid   to be coldavoir honte de   to be ashamed of/aboutavoir horreur de   to detest/loatheavoir lair (de)  Ã‚  to look (like)avoir la frite  Ã‚  to feel greatavoir la gueule de bois  Ã‚  to have a hangover, to be hungoveravoir la patate   to feel greatavoir le beurre et largent du beurre  Ã‚  to have ones cake and eat it tooavoir le cafard  (informal)  Ã‚  to feel low/blue/down in the dumpsavoir lesprit de lescalier  Ã‚  to be unable to think of witty comebacks in timeavoir le fou rire   to have the gigglesavoir le mal de mer   to be seasickavoir les chevilles qui enflent  (informal)  Ã‚  to be full of oneselfavoir lhabitude de   to be used to, in the habit ofavoir lheure   to have (know) the timeavoir lieu   to take placeavoir lintention de   to intend/plan toavoir mal à   la tà ªte, aux yeux, à   lestomac   to have a headache, eye pain, stomachacheavoir mal au cÅ“ur   to be sick to ones stomachavoir peur de   to be afraidavoir raison   to be rightavoir soif   to be thirstyavoir sommeil   to be sleepyavoir tort   to be wrong Additional Resources Avoir, Être, FaireExpressions with avoirExpressions with à ªtre

Alcoholism And Their Effects On Alcoholism Essay - 1326 Words

Millions of people every year are affected by alcoholism. Both those suffering from alcoholism, and their family members. Out of the millions effected, only a fraction of them seek help in taking control of their addiction. There are many similarities between individual cases of alcoholism, and countless resources to help those who wish to stop drinking, and rekindle their relationships with their families. Statistics In 2014 in the United States 87.6% of people age 18 and older have reported drinking at some point in their lifetime. 24.7% of these people reported binge drinking within the past month, and 6.7% heavily drank in the past month.Overall 10.6 million men and 5.7 million women were reported to have an alcohol use disorder. Out of these 16.3 million individuals only 1.5 million actually received treatment for their disorders. That means only 9% of the people with an alcohol use disorder actually received professional help in 2014. (Alcohol Facts and Statistics) Interview The following interview was conducted in an attempt to learn firsthand the effects that alcoholism has on other members of the family unit. The Individual interviewed is a 21 year old Female. Interviewer: â€Å"It is my understanding that someone in your family has been struggling with alcoholism, is this correct?† Respondent: â€Å"Yes, My father has been effected by alcoholism since before I was born, and continues to struggle with it today.† Interviewer: â€Å"How would you describe your relationshipShow MoreRelatedAlcoholism And Its Effects On Alcoholism2456 Words   |  10 Pages Alcoholism is one of the most intractable and pervasive psychological disorders known. 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Chemistry Lab Free Essays

Chemistry 121 Colligative Properties Lab Demonstration of Selected Calculations from Choice I Determination of Kf for Naphthalene To determine the Kf for naphthalene, we need to find the difference in the freezing point of pure naphthalene and the solution of 1,4-dichlorobenzene in naphthalene. Let’s say that we did this experiment, used 1. 00 g 1,4-dichlorobenzene in 10. We will write a custom essay sample on Chemistry Lab or any similar topic only for you Order Now 00 g naphthalene, and found that the freezing temperature of pure naphthalene was 78. 2 °C, while that of the solution was 75. 4 °C. This gives us a ? Tf of 78. 2 °C – 75. 4 °C = 2. 8 °C. Using the equation for freezing point depression and solving for Kf, we have†¦ ?Tf = Kfmsolute Kf = ? Tf/msolute where msolute equals the molality of the solute. What is the molality of the solute? msolute=molality of solute = moles of solute/kg solvent moles of solute = 1. 00 g 1,4-DCB/146. 9 g/mol = 6. 81 x 10-3 moles 1,4-DCB kg of solvent = 10. 00 g naphthalene/1000 g/kg = 0. 01 kg solvent msolute = 6. 81 x 10-3 moles 1,4-DCB/0. 01 kg naphthalene = 0. 681 m Kf = 2. 8 °C/0. 681 m = 4. 112 K ·kg/mol The actual value for Kf for naphthalene is 7. 45 K ·kg/mol, so we’re a fair amount off the mark. This is a rather crude experiment, so that’s to be expected. Determination of the Molecular Mass/Molecular Formula of Elemental Sulfur Although this experiment didn’t go as well as I would have liked, there seemed to be some problems with the interpretation of the data as they were obtained, so I thought I’d demonstrate how to do this calculation. Elemental sulfur has a molecular formula of S8 (there are 8 sulfur atoms in a molecule of sulfur, just like there are 2 hydrogen atoms in a molecule of hydrogen). So, the purpose of this experiment was really just to see how close you could come to this answer. Practice test:  answer key To find the molar mass (and, using the atomic mass, the molecular formula) for sulfur, we first need to find the freezing point of a solution of sulfur in naphthalene. Let’s say we made such a solution with 0. 500 g powdered sulfur in 10. 00 g of naphthalene, and we found that it’s freezing point was 76. 7 °C. To find the molecular mass, let’s first find the molality of the solution by solving the above equation for msolute. (NOTE: Contrary to what many of you thought, you can’t find the molality of this solution just by using the atomic mass of sulfur to find the moles of sulfur†¦ emember that molecular sulfur has 8 sulfur atoms, but for the purposes of your experiment, you â€Å"don’t know this† and are trying to find that fact out. So, we’re solving for the molar mass just like the problem on the most recent exam involving an unknown solute. ) ? Tf =Kfmsolute msolute = ? Tf/Kf Our ? Tf = 78. 2 °C – 76. 7 °C = 1. 5à ‚ °C. Let’s use the â€Å"real† Kf instead of the one we calculated so we’ll get a better answer†¦ msolute = 1. 5 °C/7. 45 K ·kg/mol = 0. 201 mol/kg (molal) Now, we know the molality, and we know the number of kilograms of solvent (0. 010 kg of naphthalene)–let’s find the number of moles of sulfur present. oles of sulfur = molality x kg of solvent = 0. 201 m x 0. 010 kg = 0. 00201 moles sulfur Now, divide the mass of sulfur we took by this number of moles to get the molar mass of sulfur†¦ 0. 500 g sulfur/0. 00201 moles sulfur = 248. 8 g/mol This is the molar mass of elemental sulfur†¦ divide it by the atomic mass of sulfur (32. 07 g/mol) to find out how many sulfur atoms there are in a sulfur molecule. We get 7. 76 ? 8 atoms†¦ isn’t it cool how you can get the right answer when you make up your own data? 😉 Back to General Chemistry Home Page Back to General Chemistry Syllabus How to cite Chemistry Lab, Essay examples Chemistry Lab Free Essays The pKa of an Unknown Acid-Base Indicator By: Josephine Hong Lab Instructor: Yue Zhang Due: April 5, 2013 Submitted: April 5, 2013 Abstract: In this lab, the pKa of the unknown indicator of expression was determined both qualitatively and quantitatively. To verify our procedures, the experiment was tested using a known indicator, bromocresol green. Qualitatively, we used the color change of the solution with indicator to obtain the pKa value solely using a pH meter. We will write a custom essay sample on Chemistry Lab or any similar topic only for you Order Now Quantitatively, we used a pH meter and the spectrophotometer with varying concentrations of the acid and base. The maximum wavelengths of absorbance used to quantify the dissociated and undissociated forms of the bromocresol green were 440 nm (yellow, undissociated) and 616 nm (blue dissociated). For the unknown indicator, the wavelengths were 505. 96 nm (red, undissociated) and 601. 66 nm (blue, dissociated). For bromocresol green, the experimentally obtained pKa value measured qualitatively was 4. 04. Quantitatively, the pKa came out to be 4. 16. The percentage error (10. 47%) obtained was within reasonable range, allowing the same procedures to be used to determine the pKa value of the unknown indicator, Indicator of Freedom. Indicator was Freedom was found to have a pKa value of 5. 32 qualitatively essay writer typer. On the other hand, the quantitative pKa was measure to be 4. 265. Introduction: This lab applies the concept of an indicator dye, which is principally a weak acid that changes colors when reacting with the amount of hydronium ion in a solution. Thus, the qualitative part of the lab assumes that at the point where the solution changes color into an intermediate shade of the two, the concentrations of [HIn] and [In-] is approximately equal. Using the Henderson-Hasselbalch equation for them: he pH equals pKa when the ratio between the indicator and its conjugate base is 1. Subsequently, the quantitative portion of the lab deals with the relationship between absorbance and concentration: A1(? )A2(? )= c1c2 Thus, a certain absorbance of a solution can provide the concentration of the indicator and its conjugate base when taking into consideration the maximum wavelength of the two colors. Experim ental Section: To reduce the volumes of acid and base needed and the amount of time to complete the lab, the stock solutions of strong acid and base were diluted to at least one-fourth their starting amount. Thus, 60 mL of deionized water was added to both stock solutions of 20 mL HCl and NaOH to create 2 new 80 mL diluted solutions. Part 1: Finding pKa Qualitatively 25 mL solution of the diluted NaOH with 3 drops of indicator was titrated against the diluted HCl drop wise until a color change occurred. To determine the pKa of the indicators, the pH of the solutions were taken with a pH meter when there was a color change. Determining the color of bromocresol green to be yellow when acidic and blue when basic, the point of color change to measure pH was when the solution turned green. Likewise, the indicator of Freedom was red when acidic and blue when basic, which established the point of color change to be purple. These steps were performed three times for both the known and unknown indicators to find an average pKa value. Part 2: Finding pKa Quantitatively For the quantitative determination of pKa, multiple solutions of varying acid/ base concentration were prepared with 3 drops of indicator. Despite the varying concentrations of each solution, the total volume stayed constant at 20 mL. Before anything, the wavelengths of maximum absorbance were determined first by using solutions of pure acid and base with three drops of indicator. For each solution, the pH was measured before placing them in cuvettes to measure their absorbance values using the spectrophotometer. These steps were performed for both the known and unknown indicator. Results: Table 1: Qualitative Data for Bromocresol Green Trial| pH| 1| 3. 82| 2| 3. 93| 3| 4. 36| Average| 4. 04| Calculation of Average: Table 2: Maximum Absorbance and for Bromocresol Green | HCl w/ 3 Drops Indicator| NaOH w/ 3 Drops Indicator| Concentration (M)| . 028| . 0962| (nm)| 440| 616| Solution Color| Yellow| Blue| Absorbance| . 116| . 243| Table 3: Quantitative Data for Bromocresol Green Volume of HCl (mL)| Volume of NaOH (mL)| pH| Absorbance HIn| AbsorbanceIn-| 14| 6| 3. 50| . 055| . 015| 9| 10| 4. 39| . 044| . 048| 7| 13| 5. 30| . 024| . 103| Figure 1: Absorbance vs. pH for Bromocresol Green Percent Error Calculation for Bro mocresol Green: error *pKa of Bromocresol Green was found online Table 4: Qualitative Data for Indicator of Freedom Trial| pH| 1| 5. 50| 2| 5. 33| 3| 5. 12| Average| 5. 32| Table 5: Maximum Absorbance and for Bromocresol Green HCl w/ 3 Drops Indicator| NaOH w/ 3 DropsIndicator| Concentration (M)| . 1028| . 0962| (nm)| 505. 96| 601. 66| Solution Color| Red| Blue| Absorbance| . 703| . 945| Table 6: Quantitative Data for Bromocresol Green Volume of HCl (mL)| Volume of NaOH (mL)| pH| Absorbance HIn| AbsorbanceIn-| 18| 2| 2. 07| . 360| . 046| 14| 6| 2. 36| . 374| . 048| 10| 10| 3. 88| . 347| . 087| 10| 10| 3. 04| . 312| . 041| 9| 11| 9. 35| . 148| 1. 127| 9. 5| 10. 5| 5. 95| . 171| . 686| 9. 75| 10. 25| 5. 45| . 230| . 424| 9. 25| 10. 75| 9. 13| . 146| . 913| Figure 2: Graph of Absorbance vs. pH for Indicator of Freedom Discussion: The qualitative part of the lab had room for a lot of errors. The unreliability of visual observation of the slight color change in solution could have dramatically affected the results. Because the experimentally determined pKa was less than the actual pKa for both cases, strong enough color change were probably not observed. Since the titration was performed roughly using drops, the drops could have added more acid than needed, resulting in a smaller pKa.. Quantitatively, the pKa can be determined by plotting the data, with absorbance as a function of pH. There will be two separate lines, one for each wavelength of the two colors. The intersection of these two lines will indicate the point at which the pH should be equal to the pKa. This works because at the intersection point: pH=pKa+logIn-HIn It is known that A1A2= c1c2. Since A1= A2 at the intersection point of the graph, then 1= c1c2= In-HIn. Thus,pH=pKa+log1 pH=pKa at the intersection of both curves The procedure for determination of bromocresol green pKa appeared to have worked, because the percent error was roughly around 10%. Although slightly high, these errors are unpreventable. For example, cuvettes with smudges on the sides would have increased the absorbance readings of the solutions. Moreover, the maximum wavelength is crucial because it is used as a standard to know where to record the absorbance levels of the other solutions. This is because it is where the maximum absorbance occurs for the particular color produced by the solution is. It is important to measure the absorbance levels at these standardized wavelengths to keep the data consistent and to have the ability to compare the absorbance levels of two solutions without the need to calibrate or adjust the readings. Finally, a limited number of data points when determining the pH graphically could have also added to the error in this experiment. 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