Krotec; Honors Bio Period 4 Photosynthesis Lab Report I. Introduction The photosynthesis lab is designed to quantify photosynthesis‚ enabling a number of variables to be tested for their effects on photosynthetic rate. The production of oxygen‚ is used as an indirect measure of photosynthetic activity.The lab allows the examination of the effects of different wavelengths of light on photosynthetic activity. The other aspect of the lab includes Paper chromatography‚ which is
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Q4 - OE_Strengths What do you see as Southwestern Energy’s particular strengths as an investment? "Exposure to natural gas prices. Exposure to the commodity price. Runway and liquidity position would be another one. Specifically‚ cash balance. Large cash balance." Q5 - OE_Weaknesses What do you see as Southwestern Energy’s particular weaknesses as an investment? "The number one weakness is the balance sheet. They have too much debt. The capital structure is too complicated. There’s too many different
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ethylene glycol. This was discovered as the gas was heated to 90 degrees Celsius causing the liquid unknown to evaporate into a gas while recording the mass‚ volume‚ temperature‚ and volume. This provided the mass of 1.6 grams which was found by subtracting the mass of the Erlenmeyer flask‚ aluminum cover‚ and rubber band from the mass of the Erlenmeyer flask‚ aluminum cover and rubber band and unknown gas after heating. Then the temperature of the gas was determined by taking the temperature of
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Analysis of a Chemical Mixture Using the Ideal Gas Law The objective of this experiment was to determine the composition of the NaNO2 mixture in the net ionic reaction of NO2-(aq) + HSO3NH2(aq) → HSO4-(aq) + H2O(l) + N2(g) in unknown mixture number nine. It was known that NO2-(aq) and HSO3NH2(aq) were in a stoichiometric 1:1 molar ratio. In trial one the percent mass of NaNO2 in the unknown mixture was 59.30%. In trial two‚ the percent mass of NaNO2 was 63.47%. Lastly in trial three
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Chemistry 121 Colligative Properties Lab Demonstration of Selected Calculations from Choice I Determination of Kf for Naphthalene To determine the Kf for naphthalene‚ we need to find the difference in the freezing point of pure naphthalene and the solution of 1‚4-dichlorobenzene in naphthalene. Let’s say that we did this experiment‚ used 1.00 g 1‚4-dichlorobenzene in 10.00 g naphthalene‚ and found that the freezing temperature of pure naphthalene was 78.2°C‚ while that of the solution was 75
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SOLIDS: Mass‚ Volume and Density Measurements A. Overview Review Sections 1.4 - 1.6 in your textbook (Chemistry: The Central Science‚ 9th Ed. ‚ Brown‚ LeMay‚ Bursten‚ & Burdge) This experiment will introduce you to a very important concept in science‚ especially chemistry: DENSITY. Density is the relationship between the mass of an object and the volume which it occupies. Solid substances generally have the greatest density‚ normally in the range of 1 - 25 g/cm3. Most liquids have densities between
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The Russian Gas Distribution to Poland and Germany Geopolitics of Natural Gas in Belarus Circiu Alexandra Facultatea de Relatii Economice Internationale Specializarea: Comunicare de afaceri in limba engleza Forma de invatamant: ZI Anul de studiu: I Grupa 1 Seria A Introduction Natural gas is rapidly gaining in geopolitical importance. Gas has grown from a marginal fuel consumed in regionally disconnected markets to a fuel that is transported across great distances for consumption in many
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O2 would occupy the same volume as 1) 64 g of H2 2) 32 g of SO2 3) 8.0 g of CH4 4) 4.0 g of He 9. Which compound has the empirical formula CH2 O? 1) CH3OH 2) CH3CH2OH 3) HCOOH 4) CH3COOH 10. Which list consists of types of chemical formulas? 1) atoms‚ ions‚ molecules 2) metals‚ nonmetals‚ metalloids 3) empirical‚ molecular‚ structural 4) synthesis‚ decomposition‚ neutralization 11. What is the total number of neon atoms contained in 20.2 grams of neon gas? 3) 3.01 × 1023 1) 1.01
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CORROSION LAB REPORT THE CHANGE IN MASS(±0.005g) OF VARIOUS TYPES OF CORROSIVE METALS WHEN PLACED IN A SOLUTION OF 1 MOLAR CONCENTRATION OF HYDROCHLORIC ACID OVER A PERIOD OF 8 DAYS AT AN AVERGAE ROOM TEMPERATUR OF 24 DEGRESS CELCIUS. Research Question: Does the mass(±0.005g) of various types of corrosive metals (iron‚ nickel‚ zinc‚ copper and tin) change when placed in a solution of 1 molar hydrochloric acid over a period of 8 days at an average room temperature of 24 degrees Celsius? Aim:
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calculate the number of moles of each reactant. 3. To predict which reactant is in excess. 4. To use drawings to relate microscopic events‚ to write a chemical equation that represent those microscopic events. 5. To learn how to measure the volume of a liquid using a buret. Prelab Questions: 1. Calculate the number of moles in 2.65g of zinc. 2. Calculate the number of moles of hydrochloric acid in 37.5mL of a 3.00M HCl solution. 3. Calculate how many moles of HCl are
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