'G o2' diaporamas de présentation

MOLES!!!

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Chapter 12

Stoichiometry. Chapter 12. Stoichiometry. Goal Calculate quantities of reactants and products needed in chemical rxns using balanced chemical equations. Using an Equation as a Recipe . Ingredients: F rame, S eat, W heels, H andlebar, P edals Balanced equation:

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1) How many moles of water are in an 82.3g sample?

1) How many moles of water are in an 82.3g sample?. 82.3g water. 1mole water. =. x. 1. 18.02g water. 4.57 mole water. 2) How many grams of oxygen are in a sample of gas that has a volume of 8.61L at STP?. 32g O 2. 8.61L O 2. 1 mole O 2. x. x. =. 1. 22.4L O 2. 1 mole O 2.

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Chapter 9: Stoichiometry

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Stoichiometry

Stoichiometry. Warm-Up. Warm-Up. Warm-Up. Magnesium metal burns in the air. Example of stoich problem. Mg (s) + O 2(g). MgO (s). 2 Mg (s) + O 2(g). 2 MgO (s). 3g. ? g. 2 Mg (s) + O 2(g). 2 MgO (s). Example of stoich problem. 0.123 mol. 0.123 mol. 40 .3 g/ mol.

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Water Quality

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Mass to Mass Stoichiometry

Mass to Mass Stoichiometry. Honors Chemistry Unit 5. Ex. How many grams of copper (I) sulfide could be produced from 7.90 g copper (I) chloride reacting with an excess of H2S gas? Steps to Solve : 1. Write a balanced equation. Determine what you start with and what you want to know.

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PRACTICE PROBLEMS

PRACTICE PROBLEMS. How many moles of glucose, C 6 H 12 O 6 , can be burned when 10.0 mol of oxygen is available? C 6 H 12 O 6 ( s ) + 6O 2 ( g ) ? 6CO 2 ( g ) + 6H 2 O( l ). How many moles of H 3 PO 4 are produced when 71.0 g P 4 O 10 reacts completely to form H 3 PO 4 ?.

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Stoichiometry with a Twist

Stoichiometry with a Twist. Given the density of oxygen is 1.439 grams per liter, how many liters of oxygen gas can be produced if 15.0g of mercury (II) oxide are heated to produce mercury and oxygen gas?. 2HgO ? 2Hg +O 2. ? L O 2 = 15.0g HgO. 1 mol HgO. 1 mol O 2. 32g O 2. 1 L O 2.

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