questions and show your work. When you are finished‚ submit this assignment to your teacher through the appropriate dropbox basket. (3 pts) 1.) Factor 100x^2 – 49 to factor‚ use the difference of squares formula‚ because both the terms are perfect squares the difference of squares formula is a^2 – b^2 = (a-b)(a+b) therefore 100x^2 – 49 = (10x)^2 – 7^2 = (10x – 7)(10x +7) (5 pts) 2.) Solve x^2 – 11x = -30 (x^2 – 11x) + 30 = -30 +30 x^2 – 11x +30 = 0 Reorder the terms: 30 + 11x
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Hints on How to Succeed in College Classes The Key to Success: Study Time The single most important key to success in any college course is to spend enough time studying. A rule of thumb is that you should expect to study about 2 to 3 hours per week outside of class for each unit of credit. For example‚ a student taking 15 credit hours should expect to spend 30 to 45 hours each week studying outside of class. Combined with time in class‚ this works out to a total of 45 to 60 hours spent on
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Chemical Formulas Review: Nomenclature and Formula Writing Naming Simple Compounds There are four naming systems you should familiarize yourself with to succeed on the SAT II Chemistry exam. The trick is recognizing which naming system to use. Here are the guidelines: * If the compound starts with H‚ it is an acid. Use the naming acids rules. * If the compound starts with C and contains quite a few H’s and perhaps some O’s‚ it is organic. Use the naming organic compounds rules. *
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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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present in one unit of Mg(ClO3)2? - 6 21. What is the total number of atoms of oxygen in the formula Al(ClO3)3.6H2O? - 15 22. Write the correct formulas for the following binary ionic compounds. Compounds | Formulas | Lithium fluoride | LiF | Calcium oxide | CaO | Aluminum nitride | AlN | Beryllium Chloride | BeCl2 | Potassium iodide | KI | Aluminum oxide | Al2O3 | 23. Write the correct formulas for the following binary molecular compounds. Compounds | Formulas | Carbon monoxide
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Empirical Formula of a Compound * Purpose: To determine the empirical formula of Magnesium Chloride. * Data 1. Mass of evaporating dish = 45.08g 2. Mass of evaporating dish and Magnesium = 45.17g 3. Mass of Magnesium: { 2 } – { 1 } = 0.09 4. Mass of evaporating dish and Magnesium Chloride First weighing = 45.48g (After heating and cooling) second weighing = 45.49g 5. Mass of Magnesium Chloride: { 4} – { 1 } = 0.41g
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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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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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Computer The Determination of a Chemical Formula 1 Second‚ you will conduct a chemical reaction with the dried sample‚ which will produce elemental copper. By measuring the mass of copper that forms‚ you will have the necessary information to determine the moles of copper and chlorine in your sample‚ and you will be able to establish the proper chemical formula. OBJECTIVES • • • In this experiment‚ you will Ev al Determine the water of hydration in a copper chloride hydrate
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