-1A2 CHEMISTRY MODULE 4 definitions (aqa) Rate of Reaction The rate of change of concentration with time (mathematically d[X]/dt). Units are mol.dm-3.s-1 (moles per cubic decimetre per second) Initial Rate This is the rate at the very beginning of the reaction when all the starting concentrations are known exactly. Rate Equation Rate Expression A mathematical expression which relates the rate to the concentrations of substances involved in the reaction Rate Constant‚ k This is the multiplying
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A Midsummer Night’s Dream Isa Ka Damgo We were obliged to watch the play entitled A Midsummer Night’s Dream: Isa ka Damgo. Neither the story nor the plays itself are familiar to me. As we were seated on our seats on the second row of the little theatre‚ I noticed that the backdrop had the touch of Filipino folklore. So as the play started the crowd went silent and had their eyes unto the stage. So the first act started when the Datu Sampurna asked help for his daughter Dayang. The said daughter
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KANACHI‚ SHISHIMANU‚ AUR SHINZO EAK CAKE KI SHOP KE SAMNE NE CAKE KHA NE ICCHA KAR RAHE THE. KANACHI- VAAH SHINZO KYA CAKE HAI. MERA YEH CHOCOLATE CAKE KHANE KA MANN KAR RAHA HAI. SHINZO- ha‚ KANACHI TUM SAHI KAHE RAHE HO. NARATTOR- Untie DEAR MAIN DUKANDAR AATA HAI. DUKANDAR- DEKHO BACCHO AGAR TUME YEH CAKE KHANA HAI TOH TUMHE MERI DUKAAN KA DHYAAN RAKHNA PAREGA. MAIN KISE KAAM SE BAHAR JA RAHA HYUN. DHYANN RAKHNA. SHISHIMANU- BYE UNCLE AAP HAMARI CHINTA MAT KARO. KANACHI- SAB AAYAO TASTY CAKE
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average of 69.7% percent yield and an average 30.3% percent error. As for the phosphoric acid catalyzed aspirin‚ we saw an average of 55.0% percent yield and an average 42.2% percent error. The Ka value for sulphuric acid is 1.0 x 10³ while the Ka value for phosphoric acid is 7.1 x 10⁻³. Knowing that the Ka value denotes the acidity of
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base donates an electron pair to a Lewis acid. • One bond is formed and no bonds are broken. This is illustrated in the reaction of BF3 with H2O. H2O donates an electron pair to BF3 to form a new bond. pKa’s AND ACID STRENGTH pKa - An alternative to Ka to describe acid strength. (A concise way to state the strength of an acid.) electron pair is not removed from the Lewis base. Instead‚ it is donated to an atom of the Lewis acid and one new covalent bond is formed. 5 1 Acid Strength and pKa •
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Four Forces of Evolution Mutation When an allele changes into something new or is lost Creation of a new allele (a new variant) is more common Very rare and very random‚ although certain environmental influences can have a strong impact on mutation‚ such as radiation Mutation is the only source of new genes/alleles in a species It must occur in the gametes in order to pass it on Allele Definition: An allele is an alternative form of a gene (one member of a pair) that is located at a specific
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acid‚ CH3COOH. • • • • • a strong acid: hydrochloric acid‚ HCl. an acidic commercial cleanser. a basic commercial cleanser. to use the titration curves to calculate the percent of the active ingredients in the commercial cleansers. to determine the Ka of a weak acid. Procedure Overview • • • • after calibration of the pH electrode and determination of the flow rate for the automatic titration‚ a NaOH solution is standardized against HCl. a pH titration curve for acetic acid is obtained and its pKa
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CANTILEVER SHEET PILE WALL By Lakshmi Radhakrishnan Email id: lakshmiradhakrish@gmail.com ABSTRACT: A sheet pile wall consists of a series of sheet piles driven side by side into the ground‚ thus forming a continuous vertical wall for the purpose of retaining an earth bank. They are commonly used for: (1) water front structures‚ (2) temporary constructions‚ (3) light weight construction where sub soil is poor for supporting a retaining wall. A sheet pile may be of three types: Cantilever
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Matrix Algebra http://elearning.usm.my Md Harashid bin Haron‚ Ph.D. Accounting Section‚ School of Management‚ Universiti Sains Malaysia (USM)‚ 11800 Pulau Pinang‚ Malaysia Email: harashid@usm.my ; mdharashid@gmail.com Matrices? A rectangular array of numbers consisting m horizontal rows and n vertical columns. 5 3 4 2 2 1 6 4 2 A= 5 3 4 2 2 1 6 4 2 A has a size of 3 x 3; 3 x 3 matrix; 3 rows and 3 columns (row is specified
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1. Veiktie pienākumi/aktivitātes Meet the employees of hospital‚ heads of hospital‚ observe nurse job and help in patient care‚ to change bandages for patients after operations‚ observe operations in operating room‚ observe ulcer‚ neirophatic foot‚ necrosis‚ diabetic foot care‚ look a job in emergency‚ participate educating patients about bandages change‚ medicaments and care in home. In diabete center participate in diabetic people education lessons (12)‚ make a neirologic tests with patients
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