Composition Stoichiometry Essay

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Composition Stoichiometry What is composition stoichiometry? Focuses in the conversion of units of a single substance. the ratios that are arrived at by stoichiometry and can be used to determine quantities by weight in a reaction described by a balanced equation. The stoichiometry triangle: The diagram below shows the complete process of converting units in composition stoichiometry and we need to understand this because this will help us easily convert our givens, our answers etc. Just by observing the diagram above, you can probably notice that there is no direct way to convert Mass (in grams) to Particles. This means that in order for us to convert mass (grams) into particles, we first need to transform or convert it into moles. Examples for composition stoichiometry: 1. How …show more content…

How many moles are there in 516 g of CsBr? 3. How many moles are in 330g of Au? 4. How many grams are in 10.6 moles of Zn? 5. How many particles are there in 5.64 moles of Cu? Reaction Stoichiometry What is Reaction Stoichiometry Reaction stoichiometry allows us to determine the amount of substance that is consumed or produced by a reaction. Predicting the amount of product that will be produced based on the mole ratio of the reactants and products in the balanced equation. Balancing chemical equations is an essential knowledge needed for reaction stoichiometry. Ways of solving reaction stoichiometry problems A. By using the steps in solving Stoichiometry problems: 1. Convert given into moles 2. Divide by the coefficient of the given element/compound in the balanced equation. 3. Multiply to the coefficient of the element/compound being converted into. 4. convert to the desired unit for the answer. Example: 2H2 + O2  2H2O 5g of H2, How many grams of H2O will be formed? a. So first we should convert the given into moles and the given is 5g of H2 and to do that, we should divide the mass into the atom’s atomic mass. (5g of H_2)/((1.01 g/mol x 2))=2.48 moles of

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