Warm Up – 4/24-25/17

Add your answers to the form here: Warm-Up Answers

  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?
Posted in Warm-Ups | Leave a comment

Warm Up – 4/20-21/17

Add your answers to the form here: Warm-Up Answers

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.
Posted in Warm-Ups | Comments Off on Warm Up – 4/20-21/17

Warm Up – 4/18-19/17

Add your answers to the form here: Warm-Up Answers

  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.
Posted in Warm-Ups | Comments Off on Warm Up – 4/18-19/17

Warm Up – 4/5-6/17

Add your answers to the form here: Warm-Up Answers

  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.
Posted in Warm-Ups | Comments Off on Warm Up – 4/5-6/17

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!

Posted in Warm-Ups | Comments Off on Warm Up – 3/23-24/17

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.
Posted in Warm-Ups | Comments Off on Warm Up – 3/15-16/17

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.
Posted in Warm-Ups | Comments Off on Warm Up 3/13-14/17

Warm Up – 2/15-16/17

Using the Stoich-Limiting lab instructions, write the balanced chemical equations for the two possible reactions of copper(II) sulfate with iron metal.

Posted in Warm-Ups | Comments Off on Warm Up – 2/15-16/17

Warm Up – 2/10-14/17

  1. Balance the combustion of C2H5OH(aq).
  2. Show that the equation you balanced obeys the law of conservation of mass.
  3. You have 225.5 grams of C2H5OH(l).
    1. How many moles do you have?
    2. How many moles of oxygen gas do you need?
Posted in Warm-Ups | Comments Off on Warm Up – 2/10-14/17

Warm Up – 1/31 – 2/1/17

  1. 85.25 g calcium hydroxide mixes with aqueous hydrochloric acid (HCl) to make aqueous calcium chloride and water.
    1. Write the balanced equation including states of matter.
    2. Determine the type of chemical reaction.
    3. Convert the mass of calcium hydroxide to moles.
Posted in Warm-Ups | Comments Off on Warm Up – 1/31 – 2/1/17