Chem Comm Warm Up / Review – 2/14/18

  1. Define Boyle’s, Charles’, and the Ideal Gas Law.
  2. What is held constant in Boyle’s Law?
  3. Make a graph for both Boyle’s and Charles’ Law labeling both axes.
  4. Write the statements of the Kinetic Molecular Theory. (Look here).
  5. A ball has a volume of 2.9 L and temperature of 47 C.  If the ball is put into the freezer where the temperature is -4 C, what will be the new volume?
  6. What is the temperature of 2.5 moles of He gas in a 15 L container at 0.85 atm pressure?
  7. A 4.65 L balloon at 1.5 atm pressure with a temperature of 298 K is taken to a pressure of 5.6 atm pressure.  What is the new volume?
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Chem Comm Warm Up – 2/12/18

  1. 12.5 grams of Neon gas is in a 2.0 L bottle at 745 torr pressure.  What is the temperature in K and C of the gas?  (Remember the steps: make list of givens, determine gas law, isolate unknown, make conversions if needed, plug in and solve)
  2. When completed, begin making corrections to U2 Section A Quiz, U2 Section B Packet and Gas WS.
  3. Begin making 1-page (8.5 inch x 11 inch) of notes to be used on upcoming Beta this Friday.
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Chem Comm Warm-Up – 2/6/18

Complete the following problems in your notes.

  1. A balloon with a volume of 3 L at 25 C is heated to 35 C. Make a drawing of the balloon before and after heating.  Then, determine the new volume?
  2. A 2 L bottle of gas has a pressure of 1.5 atms.  The pressure is raised to 1575 mmHg.  Make a drawing of the bottle before and after the pressure is raised.  Then, determine the new volume?
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Chem Comm Warm Up – 2/1/18

  1. Write the equation for Boyle’s and Charles’ Law.
  2. A basketball with a volume of 8.5 L at 1.0 atm pressure is taken up to a game in Denver where the pressure is 0.85 atm.  The volume in the ball will change.  Do the following to determine the new volume:
    1. Make a list of the given values
    2. Use the list to determine which gas law to use
    3. Before solving, predict if the volume will go up or down
    4. Before solving, isolate the gas law for the new volume
    5. Plug in your values and solve for the new volume
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Chem Comm Warm Up – 1/26/18

The following data were collected during the temperature-volume laboratory activity using hot oil and capillary tubes:
Temperature (°C)        Length of trapped air in the tube (cm)
142                                  8.2
113                                   7.6
95                                    7.2
61                                    6.5
42                                    6.1
27                                    5.9

  1. Convert the Temperatures to Kelvin (K)
  2. The temperature was changed by the chemist.  Which axis would this be?
  3. Using graph paper, construct a graph using the Kelvin temp and the Length in cm (which is the volume).  Use Zero for the lowest values.
  4. Determine the temperature in Kelvin and Celsius where the volume would be Zero.
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Chem Comm Warm Up – 1/18/18

Use the Periodic Table and a calculator to help you convert the following.  Please show all work.

  1. Convert 685 torr to atm
  2. If a balloon with a volume of 10.5 L and pressure of 765 torr is pushed to the bottom of a pool with a pressure of 4 atm, what will be the new volume in L?
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Chem Comm Warm Up – 1/9/18

Welcome back and Happy New Year!  Now is a time to reflect on the past and make some changes to improve for the new year.  Please write the questions and answer the following in your notes.

  1. What worked well for you this past semester in this class?
  2. What 3 specific things (study more is not specific) could you do to improve in this class?
  3. List and describe 3 class rules.
  4. When are cell phones allowed to be used in this class?

 

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Chem Comm Warm Up – 12/7/17

On Separate Paper, Balance the Equations using the smallest numbers for coefficients. Turn in to In-Box when finished.

  1. __H2   +  __Cl2  –>  __HCl
  2. __Na   +  __F2  –>  __NaF
  3. __CH4  +  __O2  –>  __CO2  +  __H2O
  4. __CaBr2  +  __FeCl3  –>  __FeBr3  +  __CaCl2
  5. __C3H7OH  +  __O2  –>  __CO2  +  __H2O
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Chem Comm Warm Up – 12/5/17

  1. Write the formulas for the following:
    1. Sodium Hydroxide
    2. Sodium Carbonate
    3. Lead(II) Nitrate
  2. Sodium Hydroxide reacts with Lead(II) Nitrate to make 2 products.
    1. Determine the formula of each product.
    2. Write and balance the chemical equation.
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Chem Comm Warm Up – 12/1/17

  1. Write the formula for the following:
    1. Calcium Fluoride
    2. Iron(III) Chloride
    3. Potassium Iodide
  2. Lithium Oxide reacts with Sodium Phosphide to make 2 products.
    1. Write the chemical formulas for the reactants
    2. Write the chemical formulas for the products
    3. Write a chemical equation and then balance it.
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