Day_3_Moles: The Case of the Poisonous Pill: Day 3- Moles to Mass

The Case of the Poisonous Pill: Day 3 Moles to Mass The idea of a mole is still pretty useless unless there is a way to count the atoms/ molecules/ ions in a sample without physically counting them. Luckily, the mass of one mole of any element has a defined mass – the atomic mass from the periodic table. Need a periodic table? On-line version: Printable version: Part I. Moles to Mass (Atoms) Example. What is the mass of 2 mole of lithium atoms? 2mol Li x 6.941 grams Li 1mol Li = 13.88 grams Li 1. What is the mass of 1 mole of sulfur atoms? _______32.06g______________ 2. What is the mass of 2 moles of calcium atoms? _____80.156_________________ 3. What is the mass of 10 moles of magnesium atoms? ________549.38 ________________ Part II. Moles to Mass (Molecules) The mass of all of the atoms in a molecule is called the formula mass (amu) of the molecule. The mass of one mole of a molecule is its molar mass (g/ mol). Find the formula mass and molar mass of each compound What is the mass of 4.3 moles of silver nitrite? What is the mass of 0.60 moles of iron (III) nitrate? Overdose One possible cause of Mary’s death might have been an overdose of the medication Mary took. 1. Determine the estimate toxic dose for Mary based on her weight of 50 kg. Fill in the table