PPT-THE MOLE Test Review What is a mole?

The amount of a substance that contains 602 x 10 23 particles atoms molecules formula units 224 L volume X grams molar mass Put simply A mole is a unit of . A non-chemist’s view. A mole tells us “how many?”. You know what your neighbor means when they ask to borrow a . dozen. eggs--they want . twelve. eggs. A mole tells us “how many?”. You know (or could figure out!) what Abraham Lincoln meant when he said “four score and seven years ago…” during the Gettysburg Address---a . Chemistry 3/18/19. Drill. Write down these questions. While watching the video clips, write the answers, and when done, discuss with your row:. Why is airbag use in cars important?. What is the chemistry involved in air bag inflation?. Diagnosis and evaluation of postmolar GTN. Case Scenario . A 21 year old . nulligravida. presents with bleeding during early pregnancy. Last normal menses was 9 weeks ago, home urine pregnancy test was positive 2 weeks ago, and she has been spotting for two days with heavier bleeding the last 6 hours.. The Mole. Chemist’s counting number. amount. of a substance . 1 mole is equal to 6.022 x 10. 23. atoms or particles or molecules (Avogadro’s number). There are always 6.022 x 10. 23 . particles in . Atomic mass. Atoms of different elements have different masses. . Mass of a single atom is incredibly small so a special unit called atomic mass unit (. amu. ) is used. . Atomic Mass. Atoms are composed of three particles:. Chemical Quantities. Measuring doughnuts:. 1 dozen = 12 doughnuts (count) . 1 dozen = 500 g doughnuts (mass). 1 dozen = 1 box doughnuts (volume). Measuring steam (H. 2. O gas):. 1 mole = 6.02 x 10. 23 . big. concepts of Chemistry.. The mole is a . counting. number, just like. 1 dozen = . 12. things . 1 score = . 20. things . 1 ream = . 500. things . 1 mole = . 6.022 x 10. 23. . things or . 1 mole of a substance is 6.02 x 10. 23. . representative particles. .. Avogadro’s number = . 6.02 x 10. 23. Avogadro determined the difference between atoms and particles.. Representative particle. Figure 1Mole mounds tend to be circular with a plug in themiddle Compare with the pocket gopher mound in Figure 2A single litter is born inMarch or April averagingthree or four naked youngYoung moles 2. .. 2.) How many moles are there in 63.2g of Cl. 2. ?. 60.4L O. 2. . 22.4L O. 2. . 1 mol O. 2. . = 2.7 mol O. 2. 63.2g Cl. 2. 70g Cl. 2. 1mol Cl. 2. = 0.903mol Cl. 2. Ch. . 9. Math In Chemistry. 23. How do you measure how much?. You can measure mass, . or volume,. or you can count pieces.. We measure mass in grams.. We measure volume in liters.. We count pieces in . MOLES.. . Counting. . Counting words are used to simplify a description of a number of items. . Download PDF Moles, Warts & Skin Tags Removal™ eBook by Charles Davidson - A Digital Program That\'ll Allow You to Remove Your Moles, Warts & Skin Tags in 3 Days Naturally & Without Surgery.  . What’s a mole?. The . mole. is a unit of . measure. .. Just like meters tells us . length. and seconds tells us how much . time. , . the . mole. measures an . amount. . (how much).. Units of measure similar to mole include: . The Horse – Charlie Mackesy. Many people have enjoyed reading this book during lockdown – have you heard of the book? Have you read it?. The stories are about four friends – the boy, the mole, the fox and the horse and their deep, unshakeable friendship. Through a series of brief but profound conversations, the reader learns universal truths and rich wisdom from the mouths of the characters celebrating warmth and empathy..