Discussion Topic:
In the study "The Mole Concept", we introduced the mole, the counting unit for atoms, molecules, and small particles. A mole is the amount of substance that contains as many particles as there are atoms in exactly 12 g of carbon-12. One mole contains 6.0221 X 1023 particles, which is called Avogadro's number. Avogadro's number allows chemists to connect unimaginably small entities to sizes that are found in the laboratory.
In the study, we looked at the size or mass of a mole of everyday items like pennies and donuts. We saw that a mole of pennies would stretch most of the way across the Milky Way. In this discussion, you're going to have a chance to devise your own fun "mole" problem. Come up with an everyday object and figure out how large or massive a mole of that object would be. Try to relate this size to something the other students will be familiar with. Explain to the other students how you solved your "mole" problem. Also, respond to the examples given by other students and propose alternate solutions and comparisons.
Moon Kyu Kim
ReplyDeleteThink of the food you eat, it is consist of
organic compounds such as clucose. The molar mass of clucose is 180.15588 g/mole. Then think of how much you eat a day. It should be gigantic amount of moles of glucose. When you solve the question converting grams to moles, you first have to know the molar mass of the compound and devide the grams by its molar mass and you will get the number of moles.
Megan Dickson
ReplyDeleteA mole is an extremely large number of atoms! I computed the amount of ice cream servings that there would be in a mole of ice cream. Let's say its one of my favorite flavors of ice cream, chocolate chip cookie dough! We want to determine how many gallons of ice cream are in a mole of ice cream servings. First of all, we must define that a mole is equal to 6.022 X 10 to the 23rd atoms. We can say that one serving of ice cream is a half of a cup. We divide Avogadro's number, the number of atoms in a mole, by 32 because there are about 32 servings of ice cream in a gallon. We get 1.88 X 10 to the 22nd gallons of ice cream! That is a tremendously large amount of ice cream! We can then divide this number by 6,000,000,000 because there are about 6 billion people on earth. We are left with the number 3.14 X 10 to the twelfth. If we had a moles worth of servings of ice cream, then each person could eat 3,140,000,000,000 gallons of ice cream!
Megan Dickson
ReplyDeleteMoon Kyu Kim, glucose was a practical choice for this discussion. Everyone with experience in chemistry is familiar with the compound glucose. We all get energy from the glucose in the food we eat. The molar mass of glucose is 180.16 g/mol. I think that in this discussion, we were supposed to choose an item and compute how much of that item there would be in 6.022 X 10 to the 23rd units of the item.
Allison VanOtterdyk
ReplyDeleteLets take a 12 oz pillow. First, lets convert it to pounds to fit the example. 1 ounce equals about .0635 pounds, so 12 oz would be about .75 pounds. Now, lets multiply this by avagrados number in order to get about 4.5165.
Next, let us see how much the empire state building weighs. The empire state building is about 740 million pounds. We divide the mole of the 12 0z pillows by the empire state building and find that 6.1034 x 10^14 empire state buildings fit into a mole of 12 oz pillows, we should make a building of pillows.
That's too much ice cream for people megan, it might solve world hunger for like a day before it all melts but people would surely become overweight in no time.
ReplyDeleteTis a very funny comparison to think about it that way.
But hey, who doesn't like ice cream?
It makes me wonder how many people a mole of chicken wings could feed.
Allison VanOtterdyk
Dwayne Hahm.
ReplyDeleteLet us see. Table tennis ball has area of 5027mm to the 2nd . mole of the area will be 3.17365 x 10^23mm^2. Round up will be 3x 10^23mm^2. Changing this to km^2 will be 3x10^17 Km^2. Earth has 510,072,000km^2, so dividing mole of area of the ball’s area to the Earth area gives about 6x10^8. Therefore, we will have 600,000,000 earths to live in! We will not have to worry about anything, if we can live in mole area of Ping pong ball!
Megan had very interesting idea. It made me think outside of the chemistry and understand the mole and Avogadro’s number better. Also, we should make this happen so that there are no famine in the earth like Allison said.
ReplyDeleteDwayne Hahm
Kelsey Sloper
ReplyDeleteLet's see how many people could use one mole of shampoo. My shampoo container can hold 13.5oz of liquid. -a rough guesstimation-Lets say each person uses 0.5oz per wash. That means there are about 27 servings (? haha I'm not sure what to call them) of shampoo per container. We must divide avogadro's number (6.022x10^23) by 27 because there are 27 servings per container, giving us 2.2304x10^22. That's a lot of shampoo. To this day there are 6,787,612,945 people living on earth (www.census.gov). Dividing 2.2304x10^22 by the current population leaves us with 3.2859x10^12. Therefore, over 3 trillion people could use ONE mole of shampoo!
I really like everyone's idea!
ReplyDeleteI wonder if there's a way to figure out how many pillows one mole of the feathers from a single chicken could fill, that would be really interesting (going off of Ally's post).
-Kelsey Sloper
I will use a 50g. bouncing ball. Playing with one of these is pretty fun and when you bounce it off of your friends, its hilarious! Anyway,to find out how much a mole of 50 gram bouncing balls would be, we have to divide avogadro's number, which is 6.022 x 10^23, by 50. The number comes out to be 1.2044 x 10^22, or 12,044,000,000,000,000,000,000, which is how many bouncing balls we can play with! I'll borrow Megan's statistic of there being about 6 billion people in this world (thanks megan!) and find that each person would get to have 2.007 x 10^12, or 2,007,000,000,000 bouncing balls!
ReplyDeleteThen, we distribute all of these bouncing balls to everybody and have a worldwide fight. muhaha! I have more than 2 trillion bouncing balls in my arsenal! oh wait, so do you...
wow kelsey, that is a lot of shampoo. We're not even close to 3 trillion people in this world! If we only had one mole of shampoo, everybody on earth probably wouldn't need anymore shampoo because Jesus would already have come back. hahaha
ReplyDeleteAll of these different examples showed me that a mole of something is huge. I have never thought of a mole like this. Makes you wonder if we can make a machine that makes a mole of something...
A pencil has a mass of 5.438g. If we multiply that by avogadro's number(6.0221*10^23), we get 3.2748*10^24g or 3.2748*10^21kg, which is the mass of one mole of a pencil. That's 2.4 times heavier than the earth's ocean (1.35 × 1021 kg)!
ReplyDelete-Esther Lee
It's really wonderous and amazing to think about the size of moles. wow Andrew, you make me to realize how big are the numbers of moles. Instead of seeing 1.2044 x 10^22, 12,044,000,000,000,000,000,000 looks so huge!
ReplyDeleteEsther Lee
Ellen Cho
ReplyDeleteThink there are 100 pages of a book. If each page is considered as one mole, and 100 is multiplied by Avogadro's number, we get 6.022x10^25 pages. If the number is divided by number of people on the earch, which is about 6 billion, each person gets to read 1,003,666,666,666,666 pages of a book.
Ellen Cho
ReplyDeleteI think it was really interesting idea to compare the moles and atoms with ice cream. 3,140,000,000,000 gallons of ice cream seem too much for a person but it gives a good ideas of how big the moles are.
Hmmm... When you talk about everyday things that you must have, you can't leave this out: Ipod.
ReplyDeleteNow, let's say that the Ipod classic, which i have and which is godly (Muhahaha), is about 140 grams. Now, you cant divide the avogadro's number with the weight of 140g, which gives you 4.301x10^21. That is a lot of ipod classic you have, already. Now, applying the number of world's population provided by megan's problem up there, we can see how many ipod goes around per person by dividing this number with 6 billion. The number comes out to be 7.169x10^11. Dang, With this much ipods, i bet you can put every multimedia in.
It's raining ipod! hallelujah! it's raining ipod!......
Anyway, this is very big number of ipods...
All i can say is..... Yummy XD
By the way, just letting you know, if you solve out mun's question about glucose, the answer becomes 3.343x10^21, and if you divide that by 6 billion, it becomes 5.571x10^11.
ReplyDeleteMmmm, that is a lot of carbohydrates that you get...... Yummy XD
Joshua Dos Santos
ReplyDeleteLet's take the word mole. This word takes about one second to say. If a mole of repetitions of the word mole was said, then this would take 6.022X10^23 seconds. This number divided by (60 sec/min X 60 min/hour X 24 hour/day X 365 days/year) equals 1.910X10^16 years. If each person in the world, about six billion, said the word one a after another until a mole of repetitions was reached, each person would have to say it for 3,182,606 years. We get this by dividing 1.910X10^16 by 6,000,000,000.
Crazzzy.
Joshua Dos Santos
ReplyDeleteEllen's post is interesting. We could even make it a book with 6.022X10^23 pages and then all the people of the earth would need to read 6.022X10^23/6,000,000,000 pages or 1.004X10^14 pages.
**
Ellen Cho
Think there are 100 pages of a book. If each page is considered as one mole, and 100 is multiplied by Avogadro's number, we get 6.022x10^25 pages. If the number is divided by number of people on the earch, which is about 6 billion, each person gets to read 1,003,666,666,666,666 pages of a book.
Josh Dos Santos
ReplyDeleteSo, I don't know if my example counts as an ordinary thing, so I'll do another.
An average ant weighs .003 grams and is 3mm long. If an ant gained special powers and grew by one mole, then this ant would weigh 1.807X10^21g. This ant would also be... ((3mm X6.022X10^23)/(1000000 mm/km))... 1.807X10^18 kilometers long.
Huge ant!