AKS Review: Moles AKS Correlation 9c. Apply concepts of the mole and Avogadro’s number to conceptualize and calculate: -empirical/molecular formulas -mass‚ moles‚ and molecules relationships In all calculations that follow‚ SHOW ALL WORK AND USE SIGNIFICANT FIGURES. 1. Write Avogadro’s number in standard and in scientific notation. 2. What is a mole? 3. (a) In your own words‚ what is molar mass? (b) Find the molar mass of the following: Fe
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PMP® Formula Pocket Guide Print it - Fold it - Study wherever you go. Earned Value CV = EV - AC CPI = EV / AC SV = EV - PV SPI = EV / PV EAC ‘no variances’ = BAC / CPI EAC ‘fundamentally flawed’ = AC + ETC EAC ‘atypical’ = AC + BAC - EV EAC ‘typical’ = AC + ((BAC - EV) / CPI) ETC = EAC - AC ETC ‘atypical’ = BAC - EV ETC ‘typical’ = (BAC - EV) / CPI ETC ‘flawed’ = new estimate Percent Complete = EV / BAC * 100 VAC = BAC - EAC EV = % complete * BAC Mathematical Basics Average (Mean) = Sum
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having to choose an infant formula. Any trip to a local grocery can prove how difficult a task this can be. The questions these parents most likely would ask would be: is one formula better than another? Does brand name matter? Does "new and improved" or "enhanced" formula mean better? Are infant formulas really a safe and nutritious choice for feeding babies? The Federal Drug Administration (FDA) regulates over forty different brands and types of infant formulas in the United States.2 They
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Slovin’s Formula Sampling Techniques * By Steph Ellen‚ eHow Contributor * When it is not possible to study an entire population (such as the population of the United States)‚ a smaller sample is taken using a random sampling technique. Slovin’s formula allows a researcher to sample the population with a desired degree of accuracy. It gives the researcher an idea of how large his sample size needs to be to ensure a reasonable accuracy of results. * When to Use Slovin’s Formula * If
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required by the study Determine sample size ▪ Slovin Formula: ▪ n = N__ ▪ 1+NE² ▪ Where: n = sample size ▪ N = population size E = margin of error * desired Example: What should be the representative sample size if the population from which the sample will be taken is 10‚000 and the desired margin of error is 2%? Solution: To determine the sample size‚ use the formula; n = ___N__ 1+NE² n =
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forced damped transverse vibration of a beam and verify Dunkerley’s empirical formula. According to Dunkerley’s empirical formula‚ 1f2=1fb2+1fω2 where f referring to the natural frequency of heavy beam with central load fb referring to the natural frequency of heavy beam only fω referring to the natural frequency of light beam with central load M By using the results of light damping‚ Dunkerley’s empirical formula would be studied and verified by comparing the calculated resonant frequency
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The Hubbart Formula Where would a hotel manager start in determining the fair price for a guest room? What is a fair value? This question has daunted innkeepers from the beginning. Charge rates too high‚ and no one will stay with you. Setting rates too low‚ and the owner makes less money. For many years in the beginning of the modern hotel era‚ hotel managers simply guessed. As unscientific as this approach sounds‚ it did work to an extent. After a hotel has been in business
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Average formula: Let a1‚a2‚a3‚......‚an be a set of numbers‚ average = (a1 + a2 + a3‚+......+ an)/n Fractions formulas: Converting a mixed number to an improper fraction: Converting an improper fraction to a mixed number: Formula for a proportion: In a proportion‚ the product of the extremes (ad) equal the product of the means(bc)‚ Thus‚ ad = bc Percent: Percent to fraction: x% = x/100 Percentage formula: Rate/100
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prevent buckling if the temperature range is -30Cº to +50Cº? I know I use the formula: L = LoT L = ? (Change in length of the slabs. We are solving for this.) = 12e-6 (Coefficient of expansion. I looked it up on page 388.) Lo = 14 m (Initial length of slabs.) T = 30 Cº (50Cº - 20Cº) (Change in temperaure. You only care about the hottest number since you are dealing with expansion.) I then had the formula: L = e14 m 30Cº L = .00504 m L = .50 cm The space between
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Title: Formula of a Hydrate. Objective: Determining the percentage of water and the chemical formula of a hydrate. Background: Water has a polar structure and it has positively and negatively charged parts within each molecule. This gives it a strong attraction toward ions. The ions in some salts attract and form strong bonds with water molecules. These salts‚ when they have absorbed water‚ are called hydrates. Anhydrous salts are salts that can form hydrates but which have had all the water
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