Lab Exercise 2: Acceleration A. Objective This experiment will provide data to calculate the acceleration of a marble as it rolls down an incline plane over measured periods of time. To do this‚ the marble’s velocity will be determined and then its acceleration. 1. What is the distance between two marks in your inclined plan? -50cm 2. What is the angle of your inclined plan with respect the horizontal? -16degrees 3. Newton’s first law says a body at rest will remain at rest unless
Premium Arithmetic mean Velocity Errors and residuals in statistics
Alexis Becker Pre-Lab Experiment 7 Avinash Pallagani Investigating Stoichiometry with sodium salts of carbonic acid 4/2/14 A summary of the concepts: The purpose of this lab is to better understand “stoichiometry”. We will be reacting sodium carbonate (NaHCO)3 and sodium carbonate (Na2CO3) with hydrochloric acid to produce sodium chloride‚ water‚ and carbon dioxide. The balanced chemical reaction looks like this: NaHCO3 + HCl = NaCl + H2O + CO2 CAUTION: Be especially
Premium Hydrochloric acid Sodium bicarbonate Sodium
Pre-Lab Work Sheet Which type of compound usually has higher melting points: ionic compounds or covalent compounds? What is the reason for this difference in melting points? (3 points) Ionic compounds have higher melting and boiling points than covalent compounds. The electrostatic attraction in an ionic bond is very strong hence a lot of heat energy is required to break it down‚ ionic bonds have high melting and boiling points. In covalent bonds‚ the intermolecular forces are very weak and
Premium Ionic bond Covalent bond Chemical bond
compounds dissolve non-polar compounds. Solvent will dissolve a large amount of the impure compound at temperatures near the boiling point of the solvent the compound would be completely insoluble in that solvent at room temperature or at zero oC 2. Impure benzoic acid was dissolved in hot water. The container of solution was placed in an ice-water bath instead of being allowed cooling slowly. What will be the result of cooling the solution in this manner? impurities are trapped inside the crystals
Premium Solubility Solvent Chemical polarity
Name: Flame Tests & Electron Configuration Pre-Laboratory Questions and Exercises Due before lab begins. Answer in the space provided. 1. Write electron configuration for the alkali metals Li‚ Na‚ K‚ and Rb. Li ____He 2s1_____________________________________________ Na ____Ne 3s1______________________________________________ K _______Ar 4s1___________________________________________ Rb _______Kr 5s1___________________________________________ 2. Write the electron configuration for strontium
Premium Ion Chemistry Atom
Experiment 1 (week 2) The purpose of this experiment is to become familiar with the precision and accuracy of scientific glassware. I figured the smaller the glassware the more accurate the measurements would be. Which when we were preforming the experiment proved my theory. As the glassware got smaller the easier it was to get the accurate amount of water into the glassware. We went from a big flask to a small beaker to an even smaller pipette. We used a scale to get the appropriate weight
Premium Laboratory glassware Volume Accuracy and precision
November 3‚ 2014 Chemistry 1411- 106 Pre Lab Experiment #8 Objective: This Lab will help us to understand oxidation reduction and double displacement through finding the percent composition of pennies. We will also once again be working with titration in this lab. We will titrate the solution until we are only left with a solid form which will tell us about the composition of pennies. Introduction: The weight of a post 1982 penny is 2.5 grams‚ and the percent of zinc is 97.5% leaving only 2.5% copper
Premium Zinc
Exercise 2: Skeletal Muscle Physiology: Activity 2: The Effect of Stimulus Voltage on Skeletal Muscle Contraction Lab Report Pre-lab Quiz 1. Skeletal muscle fibers are innervated (stimulated) by c. motor neurons. 2. A single action potential propagating down a motor axon results in d. a single action potential and a single contractile event in the muscle fibers it innervates. 3. In resting skeletal muscle‚ calcium is stored in c. the sarcoplasmic reticulum. 4. During the latent period
Premium Skeletal muscle Neuromuscular junction Muscular system
Introduction to Biology Lab- Pre-lab for Ecology Lab #8 A.) Hierro‚ Jose L.‚ and Ragan M. Callaway. "Allelopathy and Exotic Plant Invasion." Plant and Soil 256.1 (2003): 29-39. Springer.com. Kluwer Academic Publishers‚ 13 May 2003. Web. 7 Mar. 2013. <http://download.springer.com/static/pdf/801/art%253A10.1023%252FA%253A1026208327014.pdf?auth66=1363980296_005e124552dacf48bf5fb9abb2861861&ext=.pdf>. B.) This article documented an experiment done on an invasive forb found in the
Premium Seed Nerium oleander Plant
L1:Value added roles of Logisitcs: review Maxim’s example L2: Procurement matrix: review Maxim Mooncake L3: Demand Management Questions: 1. How can demand management help to unify channel members‚ help to satisfy customers‚ and solve customer problems? The essence of demand management is to further the ability of firms throughout the supply chain-particularly manufacturing through the customer-to collaborate on activities related to the flows of product‚ services‚ information‚ and capital. The desired
Premium Logistics Supply chain management Supply chain