comparing the density of Zn(zinc) and Cu(copper)‚ you will find that Copper is more dense than Zinc. You can test this out by using the density formula D=m/v. Materials: * 2 metals (options: zn‚ al‚ or cu) * 3 samples of each metal (small‚ medium‚ and large) * Scale/Balance * Calculator * Water * Graduated Cylinder Safety: * Be prepared for your work in the laboratory. * Read all procedures thoroughly before entering the lab and/or starting experiment. * Be alert
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1. Why are spindle fibers important for mitosis? (5 points) Spindle fibers work as a path for chromosomes to travel(Campbell‚ 2009). 2. State the four bases that make up DNA. (4 points) a. (A)-Adenine b. (G)-Guanine c. (T)-Thymine d. (C)-Cytosine (Campbell‚ 2009). 3. What are the two base pairs? (2 points) a. AG b. CT 4. Answer the following questions: a. Define the term crossing over. (3 points) The phase in meiosis where chromosomes exchange segments of genetic materials (Campbell‚ 2009). b. Explain
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References: "Historical and International Aspects of the SI." Historical and International Aspects of the SI. Web. 05 June 2012. . Lab Paq Manual. Questions
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Reactions Drew Selfridge Dave Allen‚ Lab partner Instructor Yang February 11‚ 1997 INTRODUCTION This experiment was to recover the most amount of copper after it is subjected to a sequence of reactions. The copper is originally in solid form‚ but the reactions will turn it into free Cu+2 ions floating in solution. The ions will then be regrouped to form solid copper once again. During this process‚ however‚ some of the Cu+2 ions may be lost. The copper will subjected to changes in pH and heat
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Chemistry Lab Report (Redox Reactions) Questions: • What will happen when you put zinc in copper II sulfate? • What will happen when you put copper in copper II sulfate? Predictions: • We can predict that zinc will react with the aqueous solution of copper II sulfate and we will notice a reaction. We can also predict that the copper will not react with the solution of copper II sulfate and no reaction will be noticed. Hypothesis: • It is hypothesized the zinc metal will have a precipitation reaction
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Iron-Copper co doped bismuth vanadate‚ has led to the formation of the BIFECUVOX solid solution in the composition range 0.05≤x≤0.20 were synthesized by standard solid state reactions. Fe and Cu substitution effects on the phase stabilityand electrical performance in the parent bismuth vanadate and was investigated by combining results obtained fromPowder X-ray diffraction (PXRD)‚ Differential Thermal analysis (DTA)‚ Thermogravimetric analysis (TGA)‚Scanning Electron Microscopy(SEM) and AC impedance
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In this lab‚ each person in the group will have two pennies. Galvanization of a penny will create a brass penny. Galvanizing the penny in sodium hydroxide with zinc causes the penny to turn from bronze to silver. Once the penny is fully galvanized you will burn the penny and spray it off and then it will turn gold. There will be a weight change also a mass change. Observing the penny to see it turn from bronze to silver to gold. Literature review Covalent bonding is a bond when atoms share pairs
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Measurement of the distance‚ the thickness and the radius of curvature Purpose : To learn how to use vernier caliper‚ micrometer and spherometer to measure internal and external diameters of a pipe‚the thickness of a copper rods‚ and the radius of curvature of spherical lenses. 1) Vernier caliper: As shown in Fig. 1 the main fixed scale in the vernier caliper has 1 mm gradations while th sliding scale (vernier scale) has 0.05 mm gradations. The smallest division of vernier scale is called
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EXPERIMENT 3 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
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as sand are formed from physical combination of various substances‚ and are called mixtures. Mixtures can be classified into homogeneous and heterogeneous. The purpose of this lab is to learn how to separate individual components from a mixture through decantation‚ filtration‚ distillation‚ and crystallization. Pre-Lab Questions: Attached Apparatus and Supplies: • Electronic balance • 50 mL beaker • 100 mL beaker • 10x75 mm test tubes • Funnel • Hot plate • Glass rod • Filter paper
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