BRONSTED-LOWRY ACIDS AND BASES 1. The Bronsted-Lowry definition There are many definitions of acids and bases in existence‚ but the most useful one is the Bronsted-Lowry definition: An acid is a substance which can behave as a proton (re presented as a hydrogen ion‚ H+) donor. Any substance which contains hydrogen bonded to a more electronegative element can thus behave as an acid: HCl == H+ + Cl- H2SO4 == H+ + HSO4- A base is a substance which can behave as a proton acceptor. Any
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determined by the amount of hydronium ion formed in water. Most often‚ it is expressed by pH‚ which equals the –log[H3O+]. The equilibrium constant for an acid is represented by Ka = [H3O+] [A-] / [HA]‚ where HA is the acid and A- is the dissociated acid. When comparing Ka’s‚ most commonly pKa is used‚ which is equal to –log Ka. In this experiment‚ the pKa of an unknown acid is determined by titrating it with NaOH and graphing its pH levels versus volume of NaOH titrated. The inflection point found
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objektive ? 16. Nmero disa nga veprat e Gystav Folber. 17. Ne cka mbeshtetet estetika e G.Folberit ? 18. Ne vepren e Folberit “Enderrimet e Emes” ‚ per cka enderon Ema ? 19. Numer disa nga veprat e Leon Tolstoit. 20. Cfare personazhe ka perdorur Leon Tolstoi ne veprat e tij ? 21. Pse romanin e L.Tolstoit “Lufta dhe Paqja” e kane pagezuar si ? 22. Cilet kan qene personazhet qendror te romanit “Lufta dhe Paqja” ? 23. Si e kupton Tolstoi historine ? 1.Vet termi realism tregon
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3 The Correlation between HER-2 Status and Brain Metastases in Trastuzumab-treated Patients with Metastatic Breast Cancer Ka-Kiu Claire Fung Literature Review: Biochemistry/ Molecular Biology Project Convenor: Dr J A Smith Word Count: 3223 words C a n d i d a t e N u m b e r : 2 0 7 7 Ka-Kiu Claire Fung Abstract It is widely known that patients with HER-2-positive advanced breast cancer are at particularly high risk of developing
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pergjithshem Investitorët në tregjet e reja të tilla si Shqiperia duhet të jenë të vetëdijshëm se këto tregje kane risk më të madhse sa tregjet më të zhvilluara‚ duke përfshirë në disa raste risk ligjore‚ risk ekonomike dhe politike. Përveç kësaj‚ Shqiperia ka një ekonomi relativisht e vogël dhe e hapur ndaj zhvillimeve në vendet e tjera në rajonin e Ballkanit‚ me pjesën tjetër të Evropës Qendrore dhe Lindore ose në Bashkimin Evropian (BE) mund të ketë një ndikim të rëndësishëm negativ midis te tjerave
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Determination of Equilibrium Constants Introduction Bromothymol blue is an indicator for many acid-base titrations. When adding different solutions within the indicator it is to react and change colors‚ in this experiment the different colors were blue‚ green‚ and yellow. In the following experiment‚ obtaining the absorbance levels for each one makes it possible to calculate the equilibrium constant. Materials and Methods For this specific experiment there are a few materials that are crucial
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AAKHRI TAXI MUMBAI ‚ SAPNO KA SHEHER YAHA NA JANE KITTNE LOG APNAI SAPNAI LEKE ATEIN HAI .AUR KITTNO KAI SAPNE UNN KI ANKHO KAI SAMNE CHUR CHUR HO KAR BHIKHAR JATEIN HAI.INHI MAI SAI EK THI PARI.ENNHI MAI SAE EK HOKAR BHI ALAG THI WOH SABSAI ALAG SABSAIN JUDA .KUCH TOH THA USMAI JO USSAI BAKIYON SAI BOHUT ALAG BANATAN HAI . KHUBSURAT THI.PADHAI MAI BHI AGEIN RAHI. SWEET.TALENT MAI KOI KAMI NAHI THI MAUKA CHATTEIN THI WOH TOH BAS EK.BETAB THI WOH DUNIYAN KO APNI AWAZ SUNANE KE LIYE MUMBAI AYE
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INT. MARLON’S BEDROOM - DAY An alarm clock starts ringing. MARLON’S hand hand reaches out to turn off the alarm. He is shown in bed struggling to get up. MARLON (V.O.) Ako si Marlon. He gets up and goes to the bathroom and takes a bath. MARLON (V.O.) Marlon Garcia. 16 years old. Nakatira sa Luntaho Village‚ Cagayan de Oro City. He exits the bathroom and looks at the mirror.
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lab the acid Potassium hydrogen phthalate and two unknown acids were titrated. We determined the molar mass of the Potassium hydrogen phthalate‚ for the unknown acids we calculated the molar mass and the Ka values. We used NaOH as the known base for titrating in all three of the titrations. Our ka value based on our titration curve of KHP was 6.9 (the equivalence point where the pH equals the pKa) and our unknown acids were determined to be Hexanoic Acid (with an actual molar mass of 116.6g) with
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caktuar e njerëzve arkaik. Organizimi imagjinar u bënte të mundur njerëzve për t’u bashkuar duke krijuar një tip relativisht të qëndrueshëm të kulturës. Shumë kohë më pas transmetohet nga gjenerata në gjeneratë‚ pastaj vjen tek shkrimi i tyre. Çdo kohë ka mitet e veta. Pse shërben miti? Njerëzit e justifikojnë prezencën e miteve duke na paraqitur imazhe‚ ku ata kanë projektuar frikat dhe shpresat e tyre. Këtë proçes Mirçea Iliaz e quante “kthim i të ndrydhurës” dhe nga një pikëpamje pozitive themi se
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