# Chapter 8 Mole Conversions Part 1. How many moles are in 12.3 g of uranium?

## Presentation on theme: "Chapter 8 Mole Conversions Part 1. How many moles are in 12.3 g of uranium?"— Presentation transcript:

Chapter 8 Mole Conversions Part 1

How many moles are in 12.3 g of uranium?

12.3 g mol U 238.0 g = 0.0517 mol U

How many grams are in 3.39 mol of table salt, NaCl?

3.39 mol NaCl 58.5 g mol = 198 g NaCl

How many atoms are in 5.2 mol of Cu

5.2 mol Cu 6.02 x 10 23 Cu atoms mol Cu = 3.1 x 10 24 Cu atoms

How many moles are in 9.76 x 10 24 molecules of sulfuric acid, H 2 SO 4 ?

9.76 x 10 24 H 2 SO 4 molecules mol H 2 SO 4 = 16.2 mol H 2 SO 4 6.02 x 10 23 H 2 SO 4 molecules

Some gaseous elements are composed of atoms

Other gaseous elements are composed of molecules

Many Gaseous elements are “diatomic”

Diatomic Molecules H 2 O 2 N 2 Cl 2 F 2 I 2 Br 2 Hydrogen (H 2 )Fluorine (F 2 )Oxygen (O 2 )Nitrogen (N 2 )Chlorine (Cl 2 )Bromine (Br 2 ) Iodine ( I 2 )

How can you tell which gaseous elements are atoms and which are diatomic molecules?

Diatomic Molecules H O N Cl F I Br H 2 O 2 N 2 Cl 2 F 2 I 2 Br 2 Hydrogen (H 2 )Fluorine (F 2 )Oxygen (O 2 )Nitrogen (N 2 )Chlorine (Cl 2 )Bromine (Br 2 ) Iodine ( I 2 )

Find the mass of 3.26 x 10 28 molecules of O 2

3.26 x 10 28 O 2 molecules

Find the mass of 3.26 x 10 28 molecules of O 2 3.26 x 10 28 O 2 molecules mol O 2 6.02 x 10 23 O 2 molecules

Find the mass of 3.26 x 10 28 molecules of O 2 3.26 x 10 28 O 2 molecules mol O 2 32.0 g 6.02 x 10 23 O 2 molecules mol O 2 = 1.73 x 10 6 g O 2

Prozac, C 17 H 18 F 3 NO, is an antidepressant in a group of drugs called selective serotonin reuptake inhibitors (SSRIs). Prozac affects chemicals in the brain that may become unbalanced and cause depression, panic, anxiety, or obsessive- compulsive symptoms. Find its molar mass.

17(12.0) + 18(1.0) + 3(19.0) + 14.0 + 16.0 = 309.0g/mol

The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week?

The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO day

The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g day mg

The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g mol day mg 309.0 g

The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g mol 7 days day mg 309.0 g week

The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g mol 7 days day mg 309.0 g week = 4.53 x 10 - 4 mol/week

The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g mol 7 days day mg 309.0 g week = 4.53 x 10 - 4 mol/week How many atoms of C would the patient consume in one week?

The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g mol 7 days day mg 309.0 g week = 4.53 x 10 - 4 mol/week How many atoms of C would the patient consume in one week? 4.53 x 10 -4 mol C 17 H 18 F 3 NO 6.02 x 10 23 molecules 17 atoms C molmolecule = 4.64 x 10 21 C atoms

Information for Upcoming Mole Quiz How does a mole relate to particles and mass? (example: One mole of H 2 O is 6.02 x 10 23 H 2 O molecules and has a mass of 18g). Be able to use this information in factor-label problems. Know how to determine the number of atoms in a molecule. Be able to use this information in factor- label problems. Be able to determine the number of grams/molecule. Identify the diatomic gases. Do metric conversions.

Homework Worksheet – Mole Conversions (There is a front and back to this worksheet).

Download ppt "Chapter 8 Mole Conversions Part 1. How many moles are in 12.3 g of uranium?"

Similar presentations