Download presentation

1
**10 9 8 7 6 5 4 3 2 1 3/11 Multistep Conversions Make 20 cookies!**

1. Analyze the cookie recipe. If a baker wanted to make 40 cookies how much of the following would they need: eggs? cups of flour? 2. CALCULATE how many minutes are in 1 year by using a “string of conversion” factors. Show all work. 1 year = ? min

2
**Stoi - chi - om - me - try Stoy- key- ahm- meh- tree**

Introduction to Stoichiometry mass balanced The Law of Conservation of ________ and a _______________ equation allows us to calculate how much of substance reacts or is produced in a chemical reaction. These types of calculations are called _____________________ and use _______________ factors to solve for an unknown mass or # of moles. Balance the equation below so we can practice some stoichiometry: stoichiometry conversion Stoi - chi - om - me - try Stoy- key- ahm- meh- tree

3
**H2 + O2 H2O Introduction to Stoichiometry mass balanced**

The Law of Conservation of ________ and a _______________ equation allows us to calculate how much of substance reacts or is produced in a chemical reaction. These types of calculations are called _____________________ and use _______________ factors to solve for an unknown mass or # of moles. Balance the equation below so we can practice some stoichiometry: stoichiometry conversion H O2 H2O

4
Formation of Water 2H2 + 1O2 2H2O

5
Formation of Water 2H2 + 1O2 2H2O

6
**2H2 + 1O2 2H2O The coefficients are molar ratios!**

Formation of Water 2H2 + 1O2 2H2O 2 molecules of H molecules of O2 2 molecules of H2O 2 x H x O2 2 x H2O (6.022 x 1023) (6.022 x 1023) (6.022 x 1023) mole mole mole 2 x H x O2 2 x H2O The coefficients are molar ratios! The balanced equation is like a recipe!

7
**2H2 + 1O2 2H2O 10.0 How much Oxygen is Required**

If a chemist has ______ g of H2, how many g of O2 would be required for the reaction? GIVEN INFORMATION ____ H2 ____ H2 ____ H2 ____ O2 ____ O2 ____ O2 WHAT I WANT TO KNOW g mol mol mol mol g 10.0 g H2 1 mol H2 1 mol O2 32.00 g O2 = 79.2 g O2 mol O2 2.02 g H2 2 mol H2 1

8
**Mass Mole Conversions**

g mol mol mol mol g 10.0 79.2 SO, WE KNOW THAT FOR ______ g H2 TO FULLY REACT, ______ g O2 IS NEEDED.

10
**_2_ NaOH + _1_ H2SO4 _2_ H2O + _1_ Na2SO4**

10 9 8 7 6 5 4 3 2 1 3/6 Stoichiometry Error _2_ NaOH + _1_ H2SO4 _2_ H2O + _1_ Na2SO4 A student sets up the stoichiometry calculation below to find out how much water is made if you start with 200 g of NaOH. 1. WRITE what 3 things they did wrong in their calculation. 200 g NaOH 1 mol NaOH 3 mol H2O 1 mol H2O = g H2O 200 g NaOH 2 mol NaOH 18.02 g H2O

Similar presentations

OK

Quantities in Chemical Reactions. the “amounts” of any reactant or product in a chemical reaction are related to each other Law of Conservation of Mass.

Quantities in Chemical Reactions. the “amounts” of any reactant or product in a chemical reaction are related to each other Law of Conservation of Mass.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To ensure the functioning of the site, we use **cookies**. We share information about your activities on the site with our partners and Google partners: social networks and companies engaged in advertising and web analytics. For more information, see the Privacy Policy and Google Privacy & Terms.
Your consent to our cookies if you continue to use this website.

Ads by Google

Seminar ppt on brain computer interface Ppt on water softening techniques of integration Ppt on network file system in linux Ppt on strings in c language Ppt on formation of day and night Ppt on bgp routing protocol Ppt on formal educational programs Ppt on m-commerce and f-commerce Ppt on different solid figures names Ppt on hydrogen fuel cell vehicles price