Name Data Sheet 1. Data Table TA Laboratory Date Section Experiment 1-Preparing a Heating Curved Time (min) Temperature (°C) Time (min) Temperature (°C) 0 18 اما 1 2 3 55 19 64 20 67 ما 21 69 71 45 8 22 73 10 23 75 6 11 24 76 7 15 25 77 8 18 26 9 25 27 78 10 29 28 79 11 34 29 80 12 38 30 80 13 44 31 80 14 48 32 80 15 52 33 80 16 55 34 17 59 35 80 80 15 Temperature when last piece of ice melts °C From Chemistry 1505L: General Chemistry Laboratory for the Allied Health Sciences, 2nd edition, revised printing by Michael Serra. Copyright © 2006 by Kendall/Hunt Publishing Company. Excerpted and adapted by permission. 13 3. Boiling point of water 4. Temperature change (AT) 5. Volume of water Mass of water 6. Number of calories needed to heat the water Show calculations Number of kilojoules needed to heat the water Show calculations

O ||| Use the observation in the first column to answer the question in the second column. soft C W W Microsoft Microsoft 6.52.210... OSTATES OF MATTER Understanding the connection between vapor pressure, boiling... esc The enthalpy of vaporization of Substance E is smaller than that of Substance F. observation At 1 atm pressure, Substance A boils at -47. °C and Substance B boils at -8. °C. At 72 °C, Substance C has a vapor pressure of 80. torr and Substance D has a vapor pressure of 100. torr. Explanation ! 1 Q 2 Check 9,088 W question At any temperature where both substances are liquid, which has the higher vapor pressure? 280 Substance E Substance F Neither, E and F have the same vapor pressure. It's impossible to know without more information. Which has a higher enthalpy of vaporization? Substance A Substance B Neither, A and B have the same enthalpy of vaporization. It's impossible to know without more information. Which has a higher enthalpy of vaporization? #m 3 Substance C…

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200 100% d. 150 e 88 lapse 100 50 b 20 30 00 a -50 Time (min) The figure above is a heating curve for a hypothetical substance. Starting at point a, the substance is heated at a constant rate. The amount of he flowing into the substance during line segment will equal the AH vaporization of this substance. ef de cd ab bc acer 00000 Temperature (C)

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Use the web to research the elastic modulus and yield strength of carbon fiber composites. How do these materials compare to aluminum, steel, and titanium?

Temperature Determine which temperature is higher, 110 °C or 180 °F. Determine which temperature is lower, 36 °C or 100 °F. The melting point of gallium is 29.8 °C. If you hold a sample of gallium in your hand, will it melt? Explain your answer.

8.66 What structural characteristics are needed for additives such as plasticizers?

Draw a molecular scale picture to show how a crystal differs from a liquid.

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