Moles! Name______Date_____

Task A) Hand your instructor 782,860,000,000,000,000,000,000 atoms of aluminum. Show your work below (show your work below)

Task B: Using a scale, give your instructor 1.7 moles of table salt in a plastic cup (Show your work below)

Task C: How many water molecules are in a cup (236.6ml) of water?

1. Use a measuring cup to measure out 1 cup of water and use a scale to determine its mass.

2. Remember to first measure the mass of the cup when empty so you know how much the water weighs.

3. Once you have determined the mass of the cup of water in grams, convert that number into

moles using the molecular weight of H2O.

4. Once you have the number of moles, multiply that number by Avogadro's number to determine the number of molecules in a cup of water.

Answers with all work shown:

a) Mass of 1 Cup of Water ______c) Moles in 1 Cup of water______

b) Molar Mass H20 ______d) Molecules in 1 Cup of Water______e) How many atoms are there in a cup of water?

Task D: Sugar in gum

1. Find the mass of a piece of gum (in wrapper) before chewing. ______

2. Chew the gum for 5 minutes.

3. Find the mass of the gum (on the wrapper) after chewing. ______

4. Throw the gum in the trash.

5. Why was there a change in mass? What was its value? ______

Q1: The sugar in gum has a chemical formula of C6H12O6. Calculate the molar mass (g/mol).

Q2:. Calculate the number of moles of sugar you consumed while chewing the gum.

Q3: How many sugar molecules did you consume?

Q4: How many atoms of hydrogen? Gummy Candy

Objective: to make yummy gummy candy, learn about molar mass and do math!

Recipe for Gummy Candy:

 Two 1oz packets of unflavored gelatin

 One 3.5oz box of flavored gelatin

 2/3 Cup of water.

Instructions for cooking.

1) Combine all ingredients

2) Heat on medium until the powder is dissolved

3) Pour into molds and wait until it hardens (~20 min)

Before creating your gummy candy get the mass of all your ingredients (grams) and put them in the data table on the next page). Ingredients Water Unflavored Gelatin Flavored Gelatin

Formula (H2O) (C23H34O12 N11) ( C12H22O11) (C23H34O12 N11) Mass

Molar Mass

% Composition

Number of atoms

[1] Total mass of all ingredients?______

[2] Total # of atoms in ingredients?______

[3] Ratio of atoms to grams for gummy candy ______

[4] If Mr. Sapone had a giant gummy bear with a mass of 447g, how many atoms would it be made of? (Hint, use the ratio in question 3 as a conversion factor).

Q1: Gummy bears are actually made of gelatin and sugar. Use the Internet to determine what gelatin is and how it is made. State the results of your research here. Do you still want to eat gummy bears?