Chemical Quantities
Chemical Quantities Mass Moles Numbers of Particles
Chemical Quantities
Chemical Quantities Chemical reactions occur on a particle by particle basis.
Chemical Quantities Chemical reactions occur on a particle by particle basis. BUT, because these particles are so small (atoms and molecules), it is not practical or possible to count them.
Chemical Quantities Chemical reactions occur on a particle by particle basis. BUT, because these particles are so small (atoms and molecules), it is not practical or possible to count them. We CAN, however, easily determine the mass of a huge quantity of particles, using a balance.
Chemical Quantities Chemical reactions occur on a particle by particle basis. BUT, because these particles are so small (atoms and molecules), it is not practical or possible to count them. We CAN, however, easily determine the mass of a huge quantity of particles, using a balance. Then use the idea of a MOLE to convert between mass and the number of particles.
÷ molar mass ÷ 6.02 x 1023 x 6.02 x 1023 mass (g) moles number of particles moles use Avogadros number use periodic table ÷ 6.02 x 1023 x molar mass x 6.02 x 1023
Chemical Quantities The MOLE is hugely important when dealing with chemical quantities. The MOLE is the SI unit for chemical quantities. Soooo, what is a mole in chemistry?
First, some analogous quantities you're probably familiar with: How many things are in a pair? How many in a dozen? How many in a gross? How many papers are in a ream?
MOLE The mole is a huge (but specific) number of things! This number is called Avogadro's number. A mole is 6.02 x 1023 things (a shorthand way of writing 602,000,000,000,000,000,000,000)
How many dots are on this page? MOLE: a lot of things .................................................................................................... How many dots are on this page? Each row has 100 dots and there are 100 rows.
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of 10 reams = 50 million dots
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a year, how many sheets would represent the age of the U.S.?
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a year, how many sheets would represent the age of the U.S.? 1/50th of a sheet
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a year, how many sheets would represent the age of the solar system?
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a year, how many sheets would represent the age of the solar system? 100 boxes
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a person, how many sheets would represent the population of the US?
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a person, how many sheets would represent the population of the US? 6 boxes
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a person, how many sheets would represent the number of people killed in WWII concentration camps?
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a person, how many sheets would represent the number of people killed in WWII concentration camps? 2 reams
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a year, how many sheets would represent the age of the solar system?
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a year, how many sheets would represent the age of the solar system? 100 boxes
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a person, how many sheets would represent the number of Soviets killed in WWII?
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a person, how many sheets would represent the number of Soviets killed in WWII? 6 reams
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a person, how many sheets would represent the number of US citizens killed in WWII?
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is a person, how many sheets would represent the number of US citizens killed in WWII? 40 sheets
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is an atom, how many sheets would represent the number of atoms in a penny?
MOLE: a lot of things 1 sheet = 10 thousand dots .................................................................................................... 1 sheet = 10 thousand dots 100 sheets = 1 million dots 1 ream (500 sheets) = 5 million 1 box of reams = 50 million dots 20 boxes = 1 billion dots If each dot is an atom, how many sheets would represent the number of atoms in a penny? 600,000,000,000,000 boxes!!
MOLE: a lot of things One mole of rice grains is more grains than the number grown since the beginning of time. It would cover all the land area of the earth to a depth of 75 meters.
MOLE: a lot of things The CRAY S-1 super computer has a nominal speed rating of 100 million instructions per second and could count the entire population of the US in 1/4 second. It would take 19 million years to count to 1 mole.
MOLE: a lot of things If you had a mole of pennies and bought kite string at an inflated price of $1 million per foot:
MOLE: a lot of things If you had a mole of pennies and bought kite string at an inflated price of $1 million per foot: you would have enough to reach to the moon and back 500 times
MOLE: a lot of things If you had a mole of pennies and bought kite string at an inflated price of $1 million per foot: you would have enough to reach to the moon and back 500 times then wrap around the earth 500 times
MOLE: a lot of things If you had a mole of pennies and bought kite string at an inflated price of $1 million per foot: you would have enough to reach to the moon and back 500 times then wrap around the earth 500 times If you sold what's left at 1 penny per foot:
MOLE: a lot of things If you had a mole of pennies and bought kite string at an inflated price of $1 million per foot: you would have enough to reach to the moon and back 500 times then wrap around the earth 500 times If you sold what's left at 1 penny per foot: you could buy 1000 cars and the gas to run them continuously for years
MOLE: a lot of things If you had a mole of pennies and bought kite string at an inflated price of $1 million per foot: you would have enough to reach to the moon and back 500 times then wrap around the earth 500 times If you sold what's left at 1 penny per foot: you could buy 1000 cars and the gas to run them continuously for years and still have enough money to give every individual on earth $13,000.
MOLE: a lot of things
MOLE: a lot of things If you had a mole of water molecules:
MOLE: a lot of things If you had a mole of water molecules: Could you swim in them?
MOLE: a lot of things If you had a mole of water molecules: Could you swim in them? If you were really thirsty, would a mole of water quench your thirst?
MOLE: a lot of things If you had a mole of water molecules: Could you swim in them? If you were really thirsty, would a mole of water quench your thirst? What would happen if a mole of water rushed into this room right now?
MOLE: a lot of things. How many? How many things in a pair? How many in a dozen? How many in a gross? A mole has 602000000000000000000000 things!
Passal Lab prep How could I get the average mass of a student in this class? How could I estimate the mass of 1400 students? If the average mass of students is 50 kg, and my second period class weighs 1000 kg, how many students are in that class?
AVOGADRO'S NUMBER Avogadro's number is the number of things in one mole. It's value is 6.02 x 1023 To convert number of particles to moles, divide by the 6.02 x 1023 To convert moles to number of particles, multiply by the 6.02 x 1023
Mini Quiz #1 Version A How many atoms are in a mole of carbon? How many atoms are in two moles of carbon? How many moles would 18.06 x 1023 atoms be? Version B How many atoms are in a mole of beryllium? How many atoms are in two moles of beryllium? How many moles would 18.06 x 1023 atoms be?
MOLAR MASS Molar mass is the mass of one mole of something (anything). For elements, it's printed on the Periodic Table (in grams)! To convert mass to moles, divide by the molar mass To convert moles to mass, multiply by the molar mass
Mini-Quiz #2 Version A Version A What's the molar mass of carbon? What's the mass of two moles of carbon? How many moles would 36 g of carbon? Version A What's the molar mass of beryllium? What's the mass of two moles of beryllium? How many moles would 36 g of beryllium?
Passel Lab
Eggs and Moles How many eggs are in a dozen? If a dozen eggs weighs 1.5 kg ... How many dozen would you have if you had 3.0 kg? How many dozens would you have if you had 4.5 kg? How much would 10 dozen eggs weigh? How many eggs would you have in 10 dozen?
Eggs and Moles How many carbon atoms are in a mole? If a mole of carbon atoms weighs 12 g ... How many moles would you have if you had 24 g? How many moles would you have if you had 36 g? How much would 10 moles of carbon atoms weigh? How many carbon atoms would you have in 10 moles?
MOLAR MASS Lithium What's the mass of an average atom? What's the mass of a mole of atoms?
A Periodic Limerick The following is an idiotic fable, About using the periodic table. If you have mass but want mole, or the reverse is your goal, A factor from the table will enable.
Deciding how to solve a mole problem What's given What's wanted Conversion factor Factor source moles mass grams number of molecules
Mini-Mole Lab
Heads Up: Chem Quantities Quiz: Period 2 - Tuesday Period 5 - Monday Period 7 - Tuesday