Master iit academy 2nd Floor‚ Samsung Plaza‚ Near Benz Circle‚ VIJAYAWADA PHYSICAL CHEMISTRY (1) Shielding constant σ for Ne is 4.15 and the effective nuclear charge on Na+ and F- are respectively (A) 4.85 6.85 (B) 5.85 6.85 (C) 6.85 4.85 (D) 4.85 4.85 (2) Electron gain enthalpy and ionization energy of an atom are –a and +b eV respectively. The electronegativity of that atom on Mulliken scale is given by (A) a – b (B) (b – a )/2 (C) a + b (D) (a + b)/2 (3)
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Introduction An atom is the smallest part of an element that can take part in a chemical change. The word “atom” comes from the Greek “atomos”‚ which means “unable to be cut”. Atomism is the philosophy of the existence of atoms. The first theories of atoms come from India. There was a Hindu sage named Kanad that hypothesized that all mater was composed of earth‚ water‚ light‚ wind‚ ether‚ time‚ space‚ mind and soul. Then another philosopher named Pakuda Katyayana suggested that everything can be
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Acid were performed. The heat given off by these two reactions was used to determine the stoichiometric ratio and the limiting reactants in each experiment. Introduction: Coefficients in a balanced equations show how many moles of each reactant is needed to react with each other and how many moles of each product that will be formed. Stoichiometry allows us to calculate the amount of reactants needed and also the amount of product. The major basis of stoichiometry is formed by the law of definite
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Part One (Flame Test): 1. Create and complete a data table for Part One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame Solution Name Color description 1 Barium Lime green 2 Calcium Red 3 Sodium Yellow 4 Rubidium Purple 5 6 Potassium Lithium Blue Pink Unknown 1 Sodium Yellow Unknown 2 Potassium Blue 2. Identify each unknown from Part One of the lab and briefly explain why you identified each unknown as you did. Unknown 1 was sodium
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Sam (name changed to protect confidentiality) is a nine month old boy who was born at 26 weeks and diagnosed with chronic lung disease. He was sent home on 0.3 litres (L) of oxygen per minute with the view of gradually weaning this down as he grew stronger. When I joined the community nurse visiting Sam at home‚ he had been weaned down to 0.1L of oxygen per minute‚ so was now having his time on oxygen weaned down; from continuous oxygen eventually to none. The community nurses follow the trust’s
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Technology is one of the greatest inventions of all time. Screen time is part of almost everyone’s life every day. Many people believe that screen time is a big problem‚ yet that is not entirely true. Excessive screen time is harmful when turned into an addiction‚ yet a little screen time a day can be helpful. Parents believe that the best way to control screen time is to limit it at home. I believe that parents should not limit screen time at home because it can teach kids to be independent
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In the book The Limit the main character’s name is Matt. Matt is a thirteen year old boy that has an interesting perspective on his world and the government. In this book the government controls everything‚ including the amount of transactions made in stores. In the book he was sent off to a workhouse because his family made too many transactions one day at the grocery store. The workhouse is a place where kids go when the family goes over their limit‚ so they go there to pay their family’s debt
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with the glass rod. c. Note after one minute‚ (i) the temperature‚ (ii) whether the solid has dissolved and (iii) anything else you see. For example‚ is gas evolved at any time? If so‚ is the gas acidic? Can you identify it using a simple test? Lab manual version 4.1 Foundation in Science 1 UTAR FHSC1134 Inorganic Chemistry Trimester 3 d. Add 2 -4 drops of universal indicator solution‚ compare the color with the chart provided‚ and note the pH
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produced from reactants equals the rate at which reactants are produced from products At equilibrium a particular ratio of concentration terms equals a constant The composition of an equilibrium mixture does not change with time Kc: equilibrium constant 15.2 Law of mass action: expresses the relationship between the concentrations of the reactants and products present at equilibrium 15.3 * * LARGE VALUE OF Kc: Equilibrium mixture contains more products than reactants = product
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tones were not appreciated * Speculum exam- minimal to moderate bleeding * I.E.- Cervix was soft‚ closed‚ non-tender‚ uterus was enlarged to 20 weeks AOG. WORKING DIAGNOSIS Working Diagnosis: G5P5(5-0-0-5) 12 wks AOG with complete h-mole Salient Features: * on and off vaginal spotting for 3 weeks * Positive pregnancy test * Transvaginal Sonography * a complex echogenic uterine mass with numerous cystic spaces * No fetus or amnionic sac seen
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