Data and Observations : Part I: Insert a complete data table‚ including appropriate significant figures and units‚ in the space below. Also include any observations you made over the course of Part I. Metal Aluminum Zinc Iron Cooper Mass of metal 27.776 g 41.664 g 34.720 g 41.664 g Volume of water in calorimeter 26.0 mL 26.0 mL 26.0 mL 26.0 mL Initial temp. of water in calorimeter 25.3 degrees C 25.3 degrees C 25.3 degrees C 25.3 degree’s C Temp of hot water and the metal
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CHEM 2018 Organic Lab Part 2 Experiment 7: Diethyl n- Butylmalonate Lab Partner: Reference: Williamson K.L.‚ & Masters
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From Wikipedia‚ the free encyclopedia For other uses‚ see Instress (disambiguation). Instress is a concept about individuality and uniqueness derived by Gerard Manley Hopkins from the ideas of the medieval philosopher Duns Scotus.[1] [Hopkins] felt that everything in the universe was characterized by what he called inscape‚ the distinctive design that constitutes individual identity. This identity is not static but dynamic. Each being in the universe ’selves‚’ that is‚ enacts its identity. And
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Lecture 12 Chapter 6 6.1 Thermochemistry: Energy & units (p.227) From observation we know‚ that - some chemical reactions begin as soon as the reactants come into contact with each other (precipitation reactions) - some reactions are slow or even so slow at room temperature that even lifetime is not enough to observe a measurable change (rusting of iron‚ tarnishing silver) Also‚ almost all chemical reactions involve exchange of heat (or energy): in combustion reactions
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LAB 1 POSTLAB REPORT (65 pts) 1. State the objective(s) of the lab. (5 pts) • To analyze the effects of specific liquids on a variety of materials • To observe potential hazards • To investigate the effects of strong bases‚ strong acids‚ acetone and bleach on a variety of materials which include sugar‚ cotton‚ nylon‚ hair‚ polystyrene‚ egg white‚ egg yolk‚ and aluminum foil. 2. Give a summary of your observations for each of the experiments. (24 pts) Sugar + H2SO4 Black clumped substance
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Physical and Chemical Change Objective: Recognize and distinguish between chemical and physical changes. Materials: - lab balance - microspatula - lab burner - dropper pipet - 5 test tubes - mortar and pestle - test tube rack - magnet - test tube holder - insulating pad - watch glass - safety goggles - glass square - lab apron or coat - copper sulfate pentahydrate - iron fillings - sodium chloride - magnesium ribbon - hydrochloric acid - paper
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Pre Lab: Background: The Density of a material may be determined by determining the mass and volume of a sample material and calculating the mass/volume ratio. An independent variable is the variable that is being manipulated or changed during the experiment. The dependent variable is the variable that is being measured. The independent variable for this experiment is the copper because you are only changing the amount of copper you use. The dependent variable is the density because we are measuring
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Love plays a significant role in every human beings life. There are many different forms of love in a person’s life. A person feels a different love for their friend then they do for an intimate lover. They feel different love for their families and parents then they feel for animals or objects. An individual usually learns what love is from a young age‚ and it progresses as they get older. Some people have trouble experiencing some forms of love because they feel like they are unable to due to past
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Editor’s Note: This occasional series of articles looks at the vital things in our lives and the chemistry they are made of. You are what you eat. But do you recall munching some molybdenum or snacking on selenium? Some 60 chemical elements are found in the body‚ but what all of them are doing there is still unknown. Roughly 96 percent of the mass of the human body is made up of just four elements: oxygen‚ carbon‚ hydrogen and nitrogen‚ with a lot of that in the form of water. The remaining
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Anti-Divorce One of the main things people do when they feel great chemistry between one another is get married. Some couples are unable to maintain their relationship and they get a divorce; which is one of the solutions to solve the problems between husband and wife. Most people think carefully before they get married however the divorce rates are continuously increasing. There are three main causes of divorce: changing in woman’s roles‚ stress in modern living‚ and lack of communication
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