(mcΔT)Substance = - [(mcΔT)Water + (CΔT)Calorimeter] Materials: Coffee-cup calorimeter Water Safety Goggles Thermometer Lab Apron Ringstand Tongs Clamp Graduated Cylinder Test tube Unknown Metal Sample Hotplate Triple Beam Balance (or other mass measuring equipment) 600 ml Beaker Procedure: 1. Follow all safety guidelines prior to starting. Clear lab station. Gather all materials. 2. Set up the coffee-cup calorimeter as shown in the previous experiment in Figure 17-1. 3. Pour
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Consulting Report Mechanical Properties Cold-Rolled Steel Student: Predrag Bogunovic STUDENT ID: 11807777 DATE: 4-APR-2014 1 TABLE OF CONTENTS 1 Introduction .................................................................................................................................... 2 2 Methods .......................................................................................................................................... 2 3 Results......................................
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discovered that relationships between pressure‚ volume‚ and temperature were constant across types of gas. These early laws gave rise to the combined gas laws and the ideal gas laws. Charles’s Law Charles’ Law shows a direct relationship between the volume of a gas and the temperature of the gas. As with most things‚ as the temperature of a gas increases so does the volume. This law is shown as: Keep in mind that this scientific relationship only works for the same gas at two diverse temperatures
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Materials: • Graduated cylinder • 2 marbles • Liquids to test such as water‚ corn syrup‚ canola oil‚ motor oil • Masking tape • 1 cm ruler • Stopwatch that is accurate to 0.1 or 0.01 seconds SAFETY NOTE: See Texas Science Safety Manual for lab and investigation guidelines: http://www.tenet.edu/teks/science/safety/safety_manual.html Engagement: Place a wooden ramp on a stack of books. Challenge students to predict which of three liquids (syrup‚ water‚ and motor oil) will reach the bottom
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In this lab‚ the pH of flat sprite and a fresh sprite are compared two ways: one way was to record the pH directly with a digital pH probe and the other was to calculate the concentration through titration. Because the reaction is a neutralization reaction‚ the concentration of can be calculated if the concentration of is known. At the end of the titration‚ the moles of will equal the moles of and the pH is expected to be greater than 7 because the found in sprite is weak and is a strong
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CHM1032L pre/post lab instructions Preparation is a key to success in this lab. For this reason‚ you are required to thoroughly read through the experiment information presented in the lab manual‚ and complete a pre-lab for each experiment you do. The prelab must be completed prior to the day of the experiment. Each Friday I will ask to see your completed prelab before I allow you to enter the lab. If you have not finished the pre-lab‚ I will not allow you to enter the lab and you will receive
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was soluble in water as well‚ but it had a very low melting point. All the substances except for sodium carbonate did not pass the requirements‚ and therefore sodium carbonate is the best possible substance. In order to prove this‚ I conducted a lab to determine the solubility‚ conductivity‚ and melting point of each substance. First‚ I made sure to obtain a Bunsen burner‚ evaporating dish‚ ethanol‚ the four substances‚ distilled water‚ conductivity probe‚ wash bottles‚ test tubes‚ and a beaker
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: As you can see that the greater the amount of pennies were added at the top of the cup‚ the shorter the distance of the cup moved and it included all of the three Newton’s laws. My hypothesis actually turned out to be accurate. It’s really fascinating that how only 1 experiment can prove all of Newton’s three laws of motion just like that. When the marble was getting released from the ramp I observed it hitting the cup and surprisingly the cup didn’t fall off or changed directions it went in
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CUMULATIVE MOLE WORKSHEET (Chemistry IB) 1. How many molecules are present in 27.0 g of distilled water? A. 2.7 x 1024 B. 1.5 C. 9.0 x 1023 D. 4.5 2. How many moles of carbon dioxide will be formed when 32.0 g of methane‚ CH4‚ burns completely in oxygen? A. 1.0 B. 2.0 C. 4.0 D. 8.0 3. How many oxygen atoms are present in 0.5 mole of pentahydrated copper(II) sulfate‚ CuSO4.5H2O? A. 2.5 B. 4.5 C. 3.0 x 1023 D. 2.7 x 1024 4. What is the total number of atoms in 3.0 molecules of propanone‚ CH3COCH3
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assignment‚ you will dissolve a sample of NaCl in water and then measure the boiling point elevation for the solution. 1. Start Virtual ChemLab and select Boiling Point Elevation from the list of assignments. The lab will open in the Calorimetry laboratory with a calorimeter on the lab bench and a sample of sodium chloride (NaCl) on the balance. 2. Record the mass of the sodium chloride in the data table. If it is too small to read‚ click on the Balance area to zoom in‚ record the reading
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