what is a mole?knightshonorschem.weebly.com/uploads/3/7/2/4/37243249/...intro into moles notes 2013...

Intro into moles notes 2013 (Honors).notebook

1

February 03, 2015

Jan 315:34 PM

Warm‐up: A sedan seats five. A human has 24 vertebrae. Assume all sedans are filled to capacity.

How many vertebrae are in the carpool if there are 56 sedans in line?

If I have 2560 fingers in a carpool, how many sedans are there?

Jan 308:18 PM

What is a mole?

How many are in a pair?A dozen?A gross? A ream?All of these words represent a specific value


2

February 03, 2015

Jan 309:07 PM

1 mole = 6.022 x 1023 Avogadro's number =

602,200,000,000,000,000,000,000

The number of people in a high school

The number of people in the world

The national debt

the number of cells in the body

Bill Gates' salary

Amount of money it takes to be rich

The estimated number of stars in the universe

Jan 318:14 AM

How big is a mole?If all 5 Billion people on earth were to do nothing but count the atoms in 1 mole 24 hours a day at a rate of 1 atom per second......

It would take 4 Million years

1 Mole of marbles is enough to cover the entire earth....

To a depths of 5 miles


3

February 03, 2015

Jan 318:20 AM

How long would it take you spend 1 mole of dollars at a rate of 1 billion dollars per second?

$6.02x1023 1 Sec

$1x1091 min

60 Sec

1 hr

60 min

1 day

24 hr

1 year

365 days

It would take you over 19x1010 Years!!!!

Jan 308:27 PM

H HO

Molecule: more than one atom covalently bonded

Atoms and ions: single elements (not diatomic)

Formula Unit: more than ion in an ionic compound

NN

CuFe

Na + Cl Ca2+Br Br

Br ‐ Ti 2+


4

February 03, 2015

Jan 308:28 PM

Which of these are molecules?

Which are atoms?

Which are formula units?

H2O CO2

Fe

NaCl

N2

MgF2

Cu

Na+

Al2O3

O2

Which are ions?

Pb

Cl2

Jan 315:29 PM

Rule of thumb for set up:

What you are "given" goes here What you want goes here

What you don't want anymoregoes here

These will "cancel out".


5

February 03, 2015

Feb 249:03 AM

Let your units be your guide.

How many atoms are in 3.5 moles of silicon?

Convert 3.55 moles MgCl2 to ions of chloride.

How many formula units of sodium acetate are in 0.87 moles of sodium acetate?

Convert 5.75 x 1024 atoms of Al into moles of Al.

Convert 5.3 x 1025 molecules of CO2 to moles

Feb 38:35 AM


6

February 03, 2015

Jan 308:15 PM

Mass and the MoleWhich would have more mass?

dozen eggs

dozen watermelons

Feb 258:12 AM

WHY?A mole of water has a mass of 18.0 g

A mole of nitrogen has a mass of 28.0g

A mole of oxygen has a mass of 32.0 g

A mole of copper has a mass of 63.5 g

A mole of sodium chloride has a mass of 58.5

A mole of sucrose (C12H22O11) has a mass of 342.3 g

A mole of aluminum nitrate has a mass of 375.1g


7

February 03, 2015

Feb 28:12 AM

Molar Mass

We can use the periodic table to find the mass of a mole of a substance. We call this an element's molar mass.

Atomic mass= molar mass

The unit for molar mass is g/mol

molar mass

Feb 210:00 AM

What is the molar mass of the following?1. Copper?2. Aluminum sulfide?3. Hydrogen peroxide?4. Nitrogen? 5. Lead IV nitrate?6. Sulfur dioxide?7. Oxygen?8. NaCl?9. K(OH)?10. Be(ClO4)2?


8

February 03, 2015

Feb 210:11 AM

We can use molar mass to convert from moles to mass-When given the moles, multiply by the molar mass:

3.5 moles of Ag 52 mol C

# of molesmolar mass

2.4 mol P1.3 X 10-3 mol Li

1.3 X 10-3 mol Li

"Let your units be your guide"

52 mol C

Feb 611:05 AM

Particle to mole

Mole to particle

mass to molemole to mass

6.022 X 1023 particlesmole

g

mole


9

February 03, 2015

Feb 210:26 AM

2. How many grams of silicon dichloride is .05 mol?

1. How many moles of aluminum oxide is 3.45 g?

5. How many moles of manganese IV dichromate is 2.3 x 10 -5 mg?

4. How many grams of copper II sulfate is 15 mol?

3. How many moles of gallium fluoride is 1.60 kg?

Feb 28:21 AM

Moles Pop Quiz Open notes! Woohoo!

1. What is the numeric amount of a mole?2. Name the particle for each of the following:

a. goldb. sodium acetatec. dicarbon hexahydride

3. Why do we use a mole to count these particles?4. Show the correct setup for the following problems:

a. The number of atoms in 3.4 moles of Mg b. The number of moles in 7.82 X 1025 molecules of water.

5. The mass in grams of one mole of a pure substance is called __________________.7. Who came up with the mole?#6 Who is the world's greatest teacher?


10

February 03, 2015

Feb 77:58 AM

mass mole particle

Copy these notes and diagram into your notes:

6.022 X 1023 particlesmole

g

mole

"If you put the units in the right place, the numbers will take care of themselves."- Laura Kudlak

(molar mass)(atoms, molecules, formula units,etc)

"ya gotta go through the mole!" ‐ Dr. Fred Winklestein

Feb 1010:57 AM

How many formula units is 3.02g LiCl?


11

February 03, 2015

Feb 1011:04 AM

How many molecules are in 2.067 X 10 10 grams of C2H6?

What is the mass of a sample of ammonium cyanide with 4.50 X 1014 formula units in it?

How many particles are in 3.002 grams of sodium hypochlorite?

Feb 710:03 AM

Molar ratioratio of particles to molecule or formula unit.


12

February 03, 2015

Feb 1011:22 AM

1. How many formula units are there in 24 grams of iron (III) fluoride?

2. How many formula units are there in 450 grams of sodium sulfate?

3. How many grams are there in 3.3 X 1023 molecules of dinitrogen hexiodide?

Warm-up: 2/13/12

Feb 210:08 AM

For example:H2O

2 hydrogens

1 oxygen

molar mass of:

1.00795H =

O =15.9994

X

X

Molar mass of water =

+

We can find the molar masses of compounds by adding the molar masses of every atom in the compound together.


13

February 03, 2015

Feb 18:18 AM

Homework answers:5a. 9.55 mol5b. 4.15 X 10 4 moles

6a. molecule; 6.23 mol CO 2

6b. formula unit; 5.94 X 10 1mol ZnCl2

13a. 6.92 X 1024 atoms Ag13b. 1.08 X 1025 molecules H2O13c. 9.03 X 1022 formula units NaCl13d. 8.13 X1021 molecules CCH4

what is a mole?knightshonorschem.weebly.com/uploads/3/7/2/4/37243249/...intro into moles notes 2013...

Documents