Warm Up – 5/15/17

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  1. Calculate the molarity if 2.85 g sodium carbonate is made into 750.0 mL solution.
  2. Determine the number of grams needed to make 150.0 mL of 0.25 M NaBr.
  3. Determine the pH of a solution having [H+] = 6.25×10-4.
  4. Determine the [OH] of a solution having a pH = 9.8.
  5. If a titration needs 39.36 mL of 0.25 M NaOH to neutralize 10.00 mL of HCl, determine the molarity of the HCl.
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Warm Up – 5/8-9/17

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  1. Determine the number of grams needed to make 250.0 mL of 0.50 M NaCl.
  2. Determine the pH of a solution having [H+] = 3.5×10-8.
  3. Is the solution in number 2 an Acid or Base?
  4. Determine the [OH] of a solution having a pH = 4.8.
  5. If a titration needs 25.36 mL of 0.15 M NaOH to neutralize 10.00 mL of HCl, determine the molarity of the HCl.
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Warm Up – 4/27-28/17

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Using the pH Calculations Presentation, answer the following:

  1. Write 2 equations for the Ionization Constant for Water.
  2. If the [H+] = 3.5 x 10-5, calculate the [OH].
  3. Write the equation to calculate pH.
  4. If the [H+] = 3.5 x 10-5, calculate the pH.
  5. If the pH = 9.45, calculate the [H+].
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Warm Up – 4/24-25/17

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  1. What foods do you think are Acids?
  2. What foods do you think are Bases?
  3. What is the pH scale?
  4. Where do acids fall on the pH scale?
  5. Where do bases fall on the pH scale?
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Warm Up – 4/20-21/17

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A solution is made by adding 2.85 g calcium hydroxide to 865.00 mL of water.  (Hint: mass of solute + mass of solvent = mass of solution = volume solution) Answer the following questions:

  1. Identify the solute (chemical formula) and solvent.
  2. Determine the grams per Liter.
  3. Determine the Molarity.
  4. Determine the %mass.
  5. Determine the ppm.
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Warm Up – 4/18-19/17

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  1. Determine the number of grams needed to make 100.0 mL of 0.20 M NaOH solution.
  2. What is the equation used to determine Mass Percent (%mass) of a Solution?
  3. Determine the %mass of a solution that has 4.50 grams NaOH put into 500.0 grams solution.
  4. What is the equation used to determine Parts per Million (ppm) of a Solution?
  5. Determine the ppm of the solution in problem 3.
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Warm Up – 4/5-6/17

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  1. Sodium Bicarbonate is added to water.  Identify the solute and solvent.
  2. 4.50 grams NaHCO3 is added to 650 mL solution.  Determine the grams/liter.
  3. 4.50 grams NaHCO3 is added to 500 mL solution.  Determine the Molarity.
  4. List a few steps in how to make a solution.
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Warm Up – 3/23-24/17

Using your Learning Target Page and your Unit 6 Work Packet, create 1 page of notes to be used on the Alpha.  You will submit it with your Alpha so make sure your Name is on it!

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Warm Up – 3/15-16/17

  1. 1475 J of heat is added to 149.24 g of copper with a starting temperature of 19.0 C.  Determine the final temperature of the substance.
  2. Determine the amount of kilojoules of heat added to 825.65 g Iron to raise the temperature from 21.3 C to 96.8 C.
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Warm Up 3/13-14/17

Please work the problems on separate paper.  Turn in to in-box when complete.  Please show all work/units:

  1. If 1947 J of heat is added to 79.24 g of substance it changes the temperature by 39.0 C.  Determine the specific heat of the substance.
  2. Determine the amount of kilojoules of heat added to 325.65 g Iron to raise the temperature from 21.3 C to 86.8 C.
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