This lesson contains 13 slides, with interactive quizzes and text slides.
Items in this lesson
Moles of compounds
Grade-10
Chemistry
Slide 1 - Slide
A dozen molecules of CCl2F2 contains one dozen of carbon and two dozens of Cl and F atoms
INTERPRET- How many of each kind -carbon, chlorine and flourine are in 1 mol of CCl2F2?
Slide 2 - Slide
OBJECTIVES
1. recall molar mass
2. Relate mass, moles and molar mass of compounds
Slide 3 - Slide
Slide 4 - Slide
Molar mass
Molar mass is the sum of the atomic masses of elements in the compound
NaCl--- 22.99 + 355 =
Slide 5 - Slide
Example
What is the mass of 4.35 *10-2 mol of zinc chloride ZnCl2 ?
Slide 6 - Slide
Find the molar mass of CaCl2 using your periodic table
Slide 7 - Open question
Find the molar mass of (NH4)3PO4 using Periodic table
Slide 8 - Open question
Baking soda,NaHCO3 is a compound used in many recipes. What is the mass of 1.25 moles of baking soda?
Slide 9 - Open question
Titanium oxide is a common compound used as a white pigment.White road marking paint contains TiO2.Calculate the number of moles of TiO2 in 43.5 g of the compound
Slide 10 - Open question
Challenge- DEET is an active insect repellent patented in 1946. What must you know to determine its molar mass?
Slide 11 - Open question
Challenge -Which of these contains the most moles of carbon atoms per mole of the compound- ascorbic acid (C6H8O6) , glycerin (C3H8O3) or vanillin (C8H8O3)
Slide 12 - Open question
List two things needed to find the number of moles