Bell Work 1 / Mole Map 1. Draw the Mole Map and include the relationships that exist between each section.

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Presentation transcript:

Bell Work 1 / Mole Map 1. Draw the Mole Map and include the relationships that exist between each section.

Bell Work 2 / Atom - Mole - Mass If you have a sample of copper that contains 7.83X 1024 atoms. How many moles of copper do you have?

Bell Work 3 / Molar mass

Bell Work 4 / Mole Conversion Review 1. Determine the number of atoms in 2.59 Moles of hydrogen gas? 2. How many grams are in 6.89 moles of glucose (C6H12O6)? 3. You have a sample that contains 42.6 grams of sodium carbonate. How many molecules would be in the sample?

Bell Work 5 / % Composition 1. Determine the percent composition of a sample of CaCl2. 2. If you have a 14.12 gram sample of CaCl2 what is the mass of Calcium in the sample?

Bell Work 6 / Nomenclature Review 1. Write the Chemical Formula or name for the Following: a. Lithium fluoride b. Manganese (II) Phosphide c. NiS d. ZnCl2 2. Write the following chemical Formulas: a. Silver Chloride b. Ammonium Phosphate c. Iron (II) Sulfate d. Tin (IV) oxide

Bell Work 7 / Empirical Formula 1. Determine the empirical formula for the following: The compound adrenaline contains 56.79% C, 6.56% H, 28.37% O, and 8.28% N by mass. 2. If the molecular mass is found to be 507.3 grams / mole. What is the molecular formula?

Bell Work 8 / % Water in a Hydrate 1. Determine the % Water in each of the following: Sodium nitrate penthydrate Lead (II) sulfate trihydrate 2. A 34.1 g sample of a cooper (II) chloride hydrate was heated to drive off the water. The remaining anhydrous sample was 26.9 g. Find the number of waters of hydration in the hydrate.

Bell Work 9 / Hydrate Determine the % Water in each of the following: Copper (II) Sulfate pentahydrate

Bell work 5 / % Comp 2 1. Determine the percent composition of Calcium in the following: a. CaO b. Ca(NO3)2 c. Ca3(PO4)2 2. Place the compounds in order by the percent composition of Calcium from the lowest to the highest.

Bell work 6 / Empirical Formulas 1. Determine the empirical formula for an unknown compound composed of 38.4 % potassium, 36.3 % oxygen, 23.7 % carbon, and 1.66 % hydrogen.

Bell work 6 / Empirical Formulas Determine the empirical formula for an unknown compound composed of 38.4 % potassium, 36.3 % oxygen, 23.7 % carbon, and 1.66 % hydrogen. 38.4 g K 1 mole 39.1 g  0.982 / 0.982 = 1.00 36.3 g O 1 mole = 2.27 / 0.982 = 2.31 16.0 g 23.7 g C 1 mole = 1.98 / 0.982 = 2.01 12.0 g 1.66 g H 1 mole = 1.64 / 1.67 1.01 g We will continue with the rest of this problem in tomorrows class