Happy birthday dan aykroyd 1952
Download
1 / 28

Happy Birthday Dan Aykroyd ( 1952) - PowerPoint PPT Presentation


  • 80 Views
  • Uploaded on

Happy Birthday Dan Aykroyd ( 1952). Reading: Chapter 8 Section 6-9 (quiz) HW 7: DUE Wednesday 7/2/14 ( only assignment from this chapter) Chap. 7, #'s 11, 12, 15-21 odd, 31, 33, 35, 39, 40, 53, 59, 67, 70, 72-75 all, 77, 82, 84, 88, 89

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Happy Birthday Dan Aykroyd ( 1952)' - marja


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Happy birthday dan aykroyd 1952
Happy Birthday Dan Aykroyd(1952)

  • Reading: Chapter 8 Section 6-9 (quiz)

  • HW7: DUE Wednesday 7/2/14 (only assignment from this chapter)

    • Chap. 7, #'s 11, 12, 15-21 odd, 31, 33, 35, 39, 40, 53, 59, 67, 70, 72-75 all, 77, 82, 84, 88, 89

  • HW 8: DUE Thursday 7/3/14 (only assignment from this chapter)

    • Chap. 8, #'s 5, 11, 19-27 odd, 33, 35, 37, 39,55-61 odd, 77, 79, 81, 85, 92, 117, 121, 122, 123

  • Lab Tomorrow (WET LAB!)

    • Experiment 6

  • Exam 2 on Thursday

  • Monday - Nomenclature Proficiency Quiz 1

  • Wednesday – DA/Math Proficiency Quiz 2


Words that represent numbers

dozen

12 things

gross

144 things

ream

500 things

mole

602200000000000000000000 things

6.022x1023 things

JUST A NUMBER!!!

Words that Represent Numbers


One mole of ANYTHING has 6.022x1023 things in it!!

Let’s assume that there is an omnipotent being with a pile in front of him which contains 1 mole of carbon atoms, and let’s say he has a pair of tweezers capable of picking up a single atom at a time (omnipotence has its benefits). Scientist say that the universe is about 15 billion years old (1.5x1010 years old). That is a LONG time, but there are 6.022x1023 atoms of carbon sitting in front of this guy, so let’s use the shortest time frame possible that we can comprehend, the second. In the 15 billion years since the Big Bang, there have been 4.7x1017 seconds. Now, let’s say that our being has been picking up one carbon atom with his tweezers EVERY SECOND of the 15 billion years since the big bang. By today, he is barely 1 MILLIONTH of the way through his pile of carbon… that is how big one mole is.

One dozen of ANYTHING has 12 things in it!!

Or, try this one on… one mole of chocolate chips would burry the entire surface of the Earth by 590 METERS (close to 2000 feet)!!!!

This number, 6.022x1023 is called Avogadro’s number.


Using avogadro s number
Using Avogadro’s number

6.022x1023 [things] = 1 mole [things]

6.022x1023 atoms K = 1 mole K


Using Avogadro’s number

How many moles contain 8.33x1022 atoms of Cl?

1 mol Cl = 6.022x1023 atom Cl


Using Avogadro’s number

How many molecules are there in 13.251 mol of carbon tetrachloride?

1 mol CCl4 = 6.022x1023 molecules CCl4


Molar Mass

Using the following information, calculate the mass (in grams) of ONE mole of calcium

= 40.08 amu (if one atom)

= 40.08 g/mol (if one mole of atom)


Molar Mass

molar has nothing to do with teeth!!!!!!!

molar means “per 1 mole”

molar mass means mass per 1 mole


Molar Mass

= 40.08 amu (if one atom)

= 40.08 g/mol (if one mole of atom)

unit equation  1 mol Ca = 40.08 g Ca


Molar Mass

What is the MOLAR MASS of calcium oxide?

CaO = Ca2+ + O2-

= 40.08 g/mol

+ 16.00 g/mol

56.08 g/mol

= molar mass CaO

1 mol CaO= 56.08 g CaO

1 mol CaO= 56.08 g CaO = 6.022x1023 molecules CaO

= 40.08 g/mol

= 16.00 g/mol


Molar Mass

Mg

MgCl2

Cl

2

x

= 24.31 g/mol

= 2 x (35.45 g/mol) = 70.90 g/mol

= 35.45 g/mol

24.31 g/mol

+ 70.90 g/mol

95.21 g/mol

= molar mass MgCl2


Molar Mass

MgCl2

1 mol MgCl2= 95.21 g MgCl2


Molar Mass

87.62 g/mol

+32.00 g/mol

Sr

Sr(OH)2

O

H

+ 2.02 g/mol

2

2

x

x

121.64 g/mol

= 87.62 g/mol

= 16.00 g/mol

= 2 x (16.00 g/mol) = 32.00 g/mol

= 1.01 g/mol

= 2 x (1.01 g/mol) = 2.02 g/mol


Molar Mass

Sr(OH)2

1 mol Sr(OH)2= 121.64 g Sr(OH)2


Molar Mass

Fe(C2H3O2)3

Fe

C

H

O

2

x

3

x

2

x

3

3

3

x

x

x

= 55.85 g/mol

55.85 g/mol

= 12.01 g/mol

= 6 x (12.01 g/mol) = 72.06 g/mol

72.06 g/mol

= 1.01 g/mol

= 9 x (1.01 g/mol) = 9.09 g/mol

9.09 g/mol

= 16.00 g/mol

= 6 x (16.00 g/mol) = 96.00 g/mol

96.00 g/mol

molar mass Fe(C2H3O2)3 =

233 g/mol

233.00 g/mol


Did you get it
Did you get it?

How many moles of chromic acid are in 7.65x1024 molecules of

chromic acid?

H2CrO4(aq)

How many atoms of silver are in 2.3400 moles of silver?

What is the molar mass of manganese (IV) phosphite?

Mn3(PO3)4


Did you get it1
Did you get it?

How many moles of chromic acid are in 7.65x1024 molecules of

chromic acid?

1 mol H2CrO4(aq) = 6.022x1023 molecules H2CrO4(aq)


Did you get it2
Did you get it?

How many atoms of silver are in 2.3400 moles of silver?

1 mol Ag = 6.022x1023 atoms Ag


Did you get it3
Did you get it?

What is the molar mass of manganese (IV) phosphite?

Mn3(PO3)4



The mole

Avogadro’s #

The mole

Only 2 options of what to do with the mole:

mole

particles

molar mass

mole

grams


The mole1

Avogadro’s #

The mole

Only 2 options of what to do with the mole:

mole

particles


The mole2

molar mass

mole

mass

The mole

Only 2 options of what to do with the mole:


Percent Composition

How much of each element makes up a compound


Percent Composition

What is the percent composition of barium selenate?

BaSeO4 = 280.29 g/mol

BaSeO4



Sr phosphite?3(PO3)2

What is the percent composition of each element in strontium phosphite?


ad