Subject: Chemistry SL Title: Preparation of a salt (lead iodide) by using precipitation method. Aim: To produce 1.50 g of lead iodide‚ PbI2‚ assuming 100 % conversion‚ using 1.00 g solid potassium iodide‚ KI‚ and 0.1 M lead nitrate‚ Pb(NO3)2 solution of volume 30 cm3 and hence calculate percentage yield. Calculations: 2KI(s) + Pb(NO3)2( aq) —> PbI2 (s) + 2KNO3 (aq) Mass of PbI2 to be produced = 1.5 g Moles of PbI2 = = 0.003 Moles of KI = 0.003*2 = 0.006 Mass of KI = 0.006*166 = 1.00 g
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The Play Cat on a Hot Tin Roof written by Tennessee Williams is set in Mississippi around circa 1960’s. There is one main protagonist named Brick and one main heroine named Margaret. Brick and Margaret live with Brick’s family‚ Big Daddy and Big Mama. Big Daddy is the sole breadwinner in the family due to him owning various businesses‚ one of which is a large cotton plantation. As the story progresses‚ the family which includes Big Mama‚ Brick‚ his spouse and Bricks brother’s family gather all together
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The Euler’s Formula Euler’s formula and Identity: eix = cos(x) + i(sin(x)) The world of math today is one with endless possibilities. It expands into many different and interesting topics‚ often being incorporated into our everyday lives. Today‚ I will talk about one of these topics; the most mind-blowing and fascinating formula invented‚ called the “Euler’s formula”. This formula was created and introduced by mathematician Leonhard Euler. In essence‚ the formula establishes the deep relationship
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Breastfeeding vs. Formula Deciding whether to breastfeed or provide formula milk is a major decision amongst new mothers. As simple as it may seem‚ the decision to breastfeed versus formula feed babies can be difficult and one of the most important decisions a mother can make. While there is nothing wrong with giving babies formula milk‚ breastfeeding should be the number one choice for mothers. As breast milk provides more nutrients‚ is naturally produced by mothers and is less expensive
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Formula One‚ also known as Formula 1 or F1 and referred to officially as the FIA Formula One World Championship‚[2] is the highest class of single-seater auto racing sanctioned by the Fédération Internationale de l’Automobile (FIA). The "formula"‚ designated in the name‚ refers to a set of rules with which all participants’ cars must comply.[3] The F1 season consists of a series of races‚ known as Grands Prix (from French‚ originally meaning great prizes)‚ held throughout the world on purpose-built
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Tennessee Williams was born in Columbus Mississippi in 1911. He started writing plays in 1945. Ten years later he released Cat on a Hot Tin Roof‚ which embodied much of Mr. Williams’s experiences during his life. As his father drank and gambled‚ Williams’s family had to continue moving and struggle with money (SparkNotes Editors). This drama is written about a family which is lying and scheming in order to receive a larger portion of a fortune when the character Big Daddy dies. Though numerous people
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CHEM 1105 Experiment 4: Determination of a Chemical Formula Introduction When atoms of one element combine with those of another‚ the combining ratio is typically an integer or a simple fraction. The simplest formula of a compound expresses that atom ratio. When two or more elements are present in a compound‚ the formula still indicates the atom ratio. To find the formula of a compound we need to find the mass of each of the elements in a weighed sample of that compound. For example‚
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Cat On The Hot Tin Roof In many movies there is a book created before the movie so the movie can base it off the book. Such as unbroken‚ a story of a man that was never broken after being held prisoner in japan during WWII‚ this book was made before the movie and came out completely different. The movie only took the important parts of the book such as running in the olympics and being held prisoner. In the movie there are many key differences between the book and the movie‚ but they both are
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Kant: The Humanity Formula "Few formulas in philosophy have been so widely accepted and variously interpreted as Kant’s injunction to treat humanity as an end in itself"(Hill‚ 38). Immanuel Kant’s views‚ as elucidated in his book‚ Groundwork of the Metaphysics of Morals‚ are based on the belief that "people count" by prohibiting actions which exploit other individuals in order for self-prosperity or altruistic ends. Ethics then‚ are confirmed by the dignity and worth of the rational agency of
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Working out the Formula of Magnesium oxide Aims When magnesium is heated in air‚ it reacts with oxygen. During this oxidation reaction‚ magnesium oxide is produced. This increases the mass. If we know the mass of magnesium at the start‚ and the mass of magnesium oxide produced at the end‚ we can work out the mass of oxygen which has been combined with the magnesium. We can use these masses to work out the formula of magnesium oxide. Apparatus Googles
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