chemistry week 25

Chemistry Week

25

Please get out your calculator!

March 4, 2013

AGENDA:1 – Bell Ringer 2– CN: Mole to Mole

Stoichiometry3 – Work Time

Today’s Goal:Students will be able to

convert between moles in balanced chemical equations.

Homework1. Mole to Mole

Stoichiometry2. Friday is the Last Day

to make up last week’s quiz.

Monday, March 4th

Objective: Students will be able to convert between

moles in balanced chemical equations.

Bell Ringer: A shop owner needs to build 10 bicycless by the end of the day to fill an order. There are 12 bike frames, 11 handlebars, 13 seats, and 18 wheels available in the shop. Is the shop owner able to fulfill this order? Explain your answer.

2 MINUTES REMAINING…

Monday, March 4th

Objective: Students will be able to convert between

moles in balanced chemical equations.

Bell Ringer: A shop owner needs to build 10 bicycless by the end of the day to fill an order. There are 12 bike frames, 11 handlebars, 13 seats, and 18 wheels available in the shop. Is the shop owner able to fulfill this order? Explain your answer.

1 MINUTES REMAINING…

Monday, March 4th

Objective: Students will be able to convert between

moles in balanced chemical equations.

Bell Ringer: A shop owner needs to build 10 bicycless by the end of the day to fill an order. There are 12 bike frames, 11 handlebars, 13 seats, and 18 wheels available in the shop. Is the shop owner able to fulfill this order? Explain your answer.

30 seconds Remaining…

Monday, March 4th

Objective: Students will be able to convert between

moles in balanced chemical equations.

Bell Ringer: A shop owner needs to build 10 bicycless by the end of the day to fill an order. There are 12 bike frames, 11 handlebars, 13 seats, and 18 wheels available in the shop. Is the shop owner able to fulfill this order? Explain your answer.

10 seconds Remaining…

BELL-RINGER TIME IS

UP!

March 4, 2013

AGENDA:1 – Bell Ringer 2– CN: Mole to Mole

Stoichiometry3 – Work Time

Today’s Goal:Students will be able to

convert between moles in balanced chemical equations.

Homework1. Mole to Mole

Stoichiometry2. Friday is the Last Day

to make up last week’s quiz.

Monday, March 4th

Bell Ringer: A shop owner needs to build 10 bicycles by the end of the day to fill an order. There are 12 bike frames, 11 handlebars, 13 seats, and 18 wheels available in the shop. Is the shop owner able to fulfill this order? Explain your answer.Answer: No. With only 18 wheels, and each

bike needs two wheels, he can only make 9 bikes.

Cornell Notes

Topic: Mole to Mole Stoichiometry

Date: 3/4/2013 Stoichiometry is a quantitative

method of applying the law of conservation of mass to determine how many moles of reactants must be present to produce a certain amount of products.

What is

stoichio-

metry?

Cornell Notes

Think of it as a recipe! Recipe = balanced chemical reaction! Coefficients are the amounts!

1 N2 + 3 H2 2 NH3

= N= H +

1 N2 mixes with 3 H2 to form 2 NH3

Creating Molar Ratios

1 N2 + 3 H2 2 NH3

How many moles of H2 would it require to make 12 moles of NH3?

1. Start with given (include units!)2. Create molar ratio from balanced

chemical reaction.

How can we

use this?

12 mol NH3 xmol NH3

mol H2 23

= 12 x 3 mol H2 2

= 18 mol H2

Practice Problem

2 HCl H2 + Cl2

How many moles of H2 will

form

from 6 moles of HCl?6 mol HCl xmol HCl mol H2

21 = 6 x 1 mol H2

2= 3 mol H2

Problem Set-Up

GIVEN x WANT_ = ___WANT

GIVEN

Problem Solving Decision Tree

Read the problem

If moles and grams

Calculate Molar Mass

If moles grams

If moles and particles

Multiply by molar mass

If grams moles

Divide by molar mass

If moles particles

Multiply by6.02 x 1023

If particles moles

Divide by6.02 x 1023