sch4c week 8 november 1 2019.notebook - wordpress.comsch4c week 8 november 1 2019.notebook 3...

10
SCH4C Week 8 November 1 2019.notebook 1 Magic Triangle Practice 1. How many moles are in 15.35 g of potassium phosphate? 2. a) How many moles of propane (C 3 H 8 ) are in a tank holding 8.93 kg of it?

Upload: others

Post on 22-Mar-2020

1 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: SCH4C Week 8 November 1 2019.notebook - WordPress.comSCH4C Week 8 November 1 2019.notebook 3 expected yield Magic Triangles Practice Quiz Use GRASP to show all your work in fully answering

SCH4C Week 8 November 1 2019.notebook

1

Magic Triangle Practice

1. How many moles are in 15.35 g of potassium phosphate?

2. a) How many moles of propane (C3H8) are in a tank holding 8.93 kg of it?

Page 2: SCH4C Week 8 November 1 2019.notebook - WordPress.comSCH4C Week 8 November 1 2019.notebook 3 expected yield Magic Triangles Practice Quiz Use GRASP to show all your work in fully answering

SCH4C Week 8 November 1 2019.notebook

2

2. b) How many molecules of propane (C3H8) are in the tank holding 8.93 kg of it?

2. c) How many atoms of carbon are in the tank holding 8.93 kg of propane?

Page 3: SCH4C Week 8 November 1 2019.notebook - WordPress.comSCH4C Week 8 November 1 2019.notebook 3 expected yield Magic Triangles Practice Quiz Use GRASP to show all your work in fully answering

SCH4C Week 8 November 1 2019.notebook

3

expected yield

Magic Triangles Practice Quiz

Use GRASP to show all your work in fully answering the following questions.  Include all proper symbols, quantities and units in your calculations.  Also, round your final answers to the correct number of significant figures.  You don't have to show the calculations for your molar masses but you do have to show them to the correct significant figures.

1. A 56.35 g sample of potassium chlorate (KClO3) is measured onto a triple beam balance.  How many moles of potassium chlorate are in this sample?

2. There are 2.75 moles of ammonia (NH3) dissolved in a bottle of window cleaner.  How many molecules of it are present? 

3.  How many hydrogen atoms are in 7.45 moles of octane (C8H18)?

Page 4: SCH4C Week 8 November 1 2019.notebook - WordPress.comSCH4C Week 8 November 1 2019.notebook 3 expected yield Magic Triangles Practice Quiz Use GRASP to show all your work in fully answering

SCH4C Week 8 November 1 2019.notebook

4

3.  How many hydrogen atoms are in 7.45 moles of octane (C8H18)?

1. A 56.35 g sample of potassium chlorate (KClO3) is measured onto a triple beam balance.  How many moles of potassium chlorate are in this sample?

Page 5: SCH4C Week 8 November 1 2019.notebook - WordPress.comSCH4C Week 8 November 1 2019.notebook 3 expected yield Magic Triangles Practice Quiz Use GRASP to show all your work in fully answering

SCH4C Week 8 November 1 2019.notebook

5

2. There are 2.75 moles of ammonia (NH3) dissolved in a bottle of window cleaner.  How many molecules of it are present? 

Page 6: SCH4C Week 8 November 1 2019.notebook - WordPress.comSCH4C Week 8 November 1 2019.notebook 3 expected yield Magic Triangles Practice Quiz Use GRASP to show all your work in fully answering

SCH4C Week 8 November 1 2019.notebook

6

Nx y

x

N

Number of atoms or ions of the first elementin the compound (atoms) or (ions)

Number of molecules or formula units of a compound

(molecules) or (f.u.)

Number of atoms or ions of the first element in the compound

(atoms/molecule)or(ions/f.u.)

Page 7: SCH4C Week 8 November 1 2019.notebook - WordPress.comSCH4C Week 8 November 1 2019.notebook 3 expected yield Magic Triangles Practice Quiz Use GRASP to show all your work in fully answering

SCH4C Week 8 November 1 2019.notebook

7

Magic Triangles Resurrection Quiz

Use GRASP to solve the following questions.

1. How many molecules of methane CH4 are in 6.75 moles of it?

2. How many moles of sodium sulfate (Na2SO4) is in 121.45 g of this substance? 

3. How many potassium ions are in 5.45 mol of potassium phosphate (K3PO4)?

Page 8: SCH4C Week 8 November 1 2019.notebook - WordPress.comSCH4C Week 8 November 1 2019.notebook 3 expected yield Magic Triangles Practice Quiz Use GRASP to show all your work in fully answering

SCH4C Week 8 November 1 2019.notebook

8

1. How many molecules of methane CH4 are in 6.75 moles of it?

2. How many moles of sodium sulfate (Na2SO4) is in 121.45 g of this substance? 

Page 9: SCH4C Week 8 November 1 2019.notebook - WordPress.comSCH4C Week 8 November 1 2019.notebook 3 expected yield Magic Triangles Practice Quiz Use GRASP to show all your work in fully answering

SCH4C Week 8 November 1 2019.notebook

9

3. How many potassium ions are in 5.45 mol of potassium phosphate (K3PO4)?

Page 10: SCH4C Week 8 November 1 2019.notebook - WordPress.comSCH4C Week 8 November 1 2019.notebook 3 expected yield Magic Triangles Practice Quiz Use GRASP to show all your work in fully answering

SCH4C Week 8 November 1 2019.notebook

10