Topic: Stoichiometry Problems
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Answers to Common Questions
How to Solve Stoichiometry Problems?
There are four steps to solving stoichiometry problems in chemistry. 1) Find the balance of your equation, 2) change units of substance to moles, 3) find moles of desired substance using a mole ration and finally 4) convert these moles into... Read More »
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How to Set Up Stoichiometry Problems?
To set up a stoichiometry problem you must ask questions about the calculation of moles, masses and percentages in the chemical reaction between reactants. For example, you can give an equation and then ask how much a certain substance is f... Read More »
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What are the major types of stoichiometry problems?
Conversions with units, especially getting atoms to moles to grams etc Read More »
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More Common Questions
Answers to Other Common Questions
Most stoichiometry problems follow a set strategy which revolves around the mole. This strategy is: Quantity A -Mols A - etc
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When solving Stoichiometry problems, Do the math in DA style using 1 mole gas at STP = 22.4 liters as a factor. More?
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You should start off by balancing the equation of the reaction, then convert the units of the substances into moles. Then MORE?
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1) Find moles of reactants 2) From moles of reactants calculate how many moles of products you'll get 3) Whichever gives you the most product is in excess
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Source: http://wiki.answers.com/Q/How_do_you_do_excess_problems_in_stoich...
When a problem has a label "stoichiometry" on top of it.
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The 1st step to solving at stoichiometry problem is write the balanced chemical equation. Then convert the mass reactant to moles.
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8.75 gal = 33.1 L 33.1 x 10^3 x 0.692 g/mL=2.29 x 10^4 g moles C8H18 = 2.29 x 10^4 /114.232 g/mol= 200 moles O2 = 200 x 25/2 = 2500 mass O2 = 2500 mol x 32 g/mol=8.00 x 104 g
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